Need help with car jacks

Black370

I am going to be installing the exhaust system I picked up from Cyerkes yesterday on my own.

I'm looking for a floor jack and 4 jack stands that will reliably hold my Z without dropping it on my head. I've been reading the forums for hours trying to find pictures of the 'hockey pucks' people are using in combination with their jack stands and don't understand exactly how they are being used.

The Z has circular-female jackpoints. All the jack stands I have found appear to have a 'U' shape where they would connect to the car. Are you guys cutting holes into the hockey pucks and placing them over 'U' of the jack stands to form the proper circular-male point needed to fit the Z's jack point?
Is there a cheap set of jacks I can get that don't require the use of hockey pucks?

Can someone help me understand exactly what I should be purchasing so I dont kill myself?

Thanks in advance.