Yep, a 20mm would work fine on the rear. The only reason I didn't go 20 is I'm going to put 305/30/19 Nitto Invo's on the back and was worried they will rub.
After I get the tires installed, I may switch to 20mm. :tup:

^ are you gonna slap that rubber on the stockers?

Yes, for now, until I can find a 19x11 rear with the right offset. I know a 10" is prob a bit too small for a 305, but I've seen that size mounted, and it's not too bad. 10.5 or 11 would be better. The invo only comes in 285 or 305, otherwise I think a 295 would be perfect for the 10" stocker.

To get the same look without spacers how much off set would i need. Like to put 19x10/F 19x11/R

just a little thing can make a nice difference...... also, i liked how you put a before and after in the same pic....good idea...less clicking around

The 15mm spacer in the front looks really good. I also have the rear 15 mm spacer in the rear, thanks to lou@amplified. One question, does the front spacer affect the camber and alignment? I've already had my alignment done after lowering it. I don't want to pay for it again.

I cant say for sure, I know my car felt the same after the front spacers, doesn't seam like it effects the alignment.
I just installed the Hotchkis sway bars yesterday and wow, they have really made a difference, the car is so much more connected now. The ride quality is virtually the same, just a tiny bit stiffer, but what a difference in the corners.
I'll post up a full review in another thread. :tup: PM Lou, he's got some good prices :tup:

Yeah he does have good prices! That's where I ordered my spacer too. So you really like the sways huh! Man I'll probably order a set. For now with it lowered on eibachs and the rear spacer the Z takes corners pretty great. I can only imagine how much better it would be with the sway bars!

Just a thought... any vibrations, no matter how little, experienced after fitting the spacers?

No, none that I've noticed.

Wish I had searched for this thread earlier. I'm installing 15mm front and 20 mm rear H&Rs today. How'd you get the longer studs in the rear with the parking brake in the way? That's the the only piece of the install that's making me wonder.

Before trying to remove the rear rotor locate the rubber plug and remove it. Turn the rotor so the hole you just unplugged is at 12 o'clock. Look through the hole into the parking brake assembly and locate the star wheel adjuster for the parking brake. Take a standard screwdriver and flip the notches on the starwheel up or down (I forgot which way) to loosen the emergency brake shoes so that the rotor will be easy to remove (and replace later). This is a good time to take a picture for reference. With the rotor removed the emergency brake assembly can be partially disassembled by taking a pair of needle nose pliers and taking the top spring off. There are two brake shoe hold downs at 3 o'clock and 9 o'clock that you remove with a screwdriver by turning the hold down approximately 90 degrees. This will allow the brake shoes to be pushed away enough for you to remove the starwheel (remember how the starwheel was mounted). Now you can remove and install each wheel stud at the 12 o'clock position. I am concerned the you will have enough space between the hub and the brake shield to insert the 20mm studs. I went with the 15mm spacer and it was close but you may not have a problem, so try it. Put everything back together making sure the brake shoes are centered like in the picture you took, adjust the emergency brake starwheel to the point the rotor can't be turned by hand, pull and release the emergency brake handle a couple of times, loosen the starwheel two to three notches (enough so that you can turn the rotor by hand). Then set the emergency brake handle on and make sure you can't turn the rotor. Put the rubber plug back in the inspection hole, put your spacer and wheel back on and torque the lug nuts to 80 - 85 foot pounds.

I used Modshacks DIY on removing and installing the wheel studs.

subscribed!!! post your results here too m4a1!

I only did 15s in the rear, but you can angle the bolt enough to get the end into the hole, then rotate the hub to get it all the way in without messing with the parking brake at all.

i have a 40th anniversary 370z and i am wondering if i can put 20mm spacers do you think the tire will rubb on with the fender ??