I am in the process of doing this too. I've gathered most of what I need but I have a few questions yet. Hopefully someone has this info....
1. I purchased 5 Lug, front calipers from an 07 G5 from my local boneyard.
I rebuilt and powder coated them. These should be a direct fit, correct? The question I have is about the brake lines. I was looking at stainless brake lines on ZZP's website. They show a different brake line set for the following :
04-07 Cobalt SS and Redline supercharged
06+ Cobalt SS 2.4
08+ Cobalt SS LNF
ZZPerformance - Stainless Brake Lines for your SS & Redline #ZZ-BRKLN-CBTRDL
The auto parts stores also show a different caliper part number between Cobalts and G5's. The numbers cast into the calipers appear to be the same. So, whats the difference? On ZZP's site, they differentiate between the Cobalt and the G5 too. Is the difference in the brake line where the body brake line connects to the rubber hose? The piece I'mtalking about is pictured above. The connector in the red brackets. Are they a different size/threaded different? If so, why would the parts stores list a different caliper if all you get is the caliper and not the brake line? Is the banjo bolt also a different size/thread?
2. I am picking up a complete 2005 LSJ rear dead axle on Friday. Its sold with the axle, axle mount brackets, ABS harness, hubs, springs and shocks. Aside from calipers/rotors/pads, E-brake cables and new bushings, is there anything else I'll need for the conversion back there? Will I also need different brake lines on the axle?
So far, I've purchased SS/SC rims, 4 new hubs, 2 front calipers, 2 front rotors and pads
For reference, my stock set-up is 4 lug, front disc, rear drum, 4 wheel ABS