I have the CL on mine and love it. Stomping Mustang GT's is awsome. Yes i have up graded my tranny & i will be testing it at the track when i get back in from work in the GOM. I'll be heading to the dyno again also. I have not seen exhaust temps over 1250, injector press has been as high as 24,000 psi & boost as high as 40lbs.