the pipe is awsome, but i didnt keep up with the carb tuning, i had a 290 in it and it almost pulled my arms off and it was pullin the wheels off the ground clean up to 4th gear, but i got scared it was runnin lean, the plug didnt have much color after about 10 minutes, so i pulled it and put in a 320, the next size up my dealer had, and have been runnin it like that, but seems to have lost some bottom end and doesnt pull near as hard ??? i have a 34mm keihin to try but gotta get an intake boot for it, and very possibly sendin my top end to flotek soon, i'll have her rippin again by spring, and i dont know if this or any pipe is better than the lrd??? <<<they're right up there with the best i thought??