Blose System Upgrade
 

I am new to the Z, but not new to car audio. Waiting for the Stereo Integrity 3" to be released along with BM mkV, will be using Helix DSP as well.

My real question is, I have always made my baffles out of 3/4 mdf and coated with truck bed liner, and used some type of putty/insulator to separate the baffle from the door. I have always had cars with factory 6.5's never 6x9's.

Are prebought adapters to run 6.5's alright to use, or is it worth building custom adapters?

Of course they are.. but there are junk ones out there as well, just like anything else. Read reviews, and take some with a grain of salt. alot of people give poor reviews because it took 3 days to get to them instead of 2, ect ect.
whenever im researching a product, I ALWAYS read the worst reviews first.