Hello all, I'm glad to be part of these forums! Before I had taken my father's 2007 GFX CCSB LBZ classic for a test drive, I had looked down upon diesel engines (called them smoggers, compensators, could walk by one with an ice cream cone and wouldn't start). I was simply amazed at the performance, fuel economy, and how gorgeous the GFX package was in these trucks, and 5 months later, I was the proud owner of a 2005 GFX CCSB that came with a 6" lift, 4" Magnaflow turbo-back, Air Raid intake, and unknown to the previous owner, a AFE bladerunner mouthpiece! It used to have EFI Live in it, and I wish it still did from what I have been reading. The only modifications I have done has been 18" XD Rockstar rims on 37's, Edge Evolution CTS with pyro, welded on a 5" stainless tip, and the resonator delete. Unfortunately a month ago, it had started puking coolant out of the overflow, and we all know what that means. Grade C's and ARPs are on their way, and I am tackling this job myself. I hope to someday see some serious drag performance out of this truck, and I'm sure I have found the proper place to share my enthusiasm! Wish me luck, and I hope that more people can see through the bias and realize what amazing vehicles these are!