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Installed my new black FAST 92mm last night and used the stock 06 gto ls2 rails and injectors. Minus the fact that the rail mounts don't line up on the rail it seems to fit. I searched and found corvette guys using a larger washer to help clamp down the rail. Some TIG and modify the rail. I've seen the adapters FAST sells. Not really sure what to go with. Any advice?
Sending the 92mm back. Went to Summit Racing this morning and picked up the 102mm. Everything bolts right up. Engine covers even fit really well. A snip here and there.
I'm not buying adapters for something that should fit. To some it may not be a big deal and i know you can make it work, but it bothered me. All the vendors list the 92mm under the 06 GTO sections so I just ASSUMED! Anyway, problem solved.