I finally finished my C5 front brake upgrade on my GT! This was an extremely easy swap using Sluppy123's parts. His parts are well designed. I will be doing the rear with his 12" kit utilizing the 88 calipers.
I did encounter one problem. I am running older 17" Azul Luz wheels, they scraped the caliper. I think I could resolve the problem by grinding the ribs off the caliper but this is a good excuse to upgrade the wheels on the GT.
I will probably use the Azul wheels on the SE after doing the front/rear upgrade using Sluppy123's 12" kit. I just need to find some time!