I have some questions regarding the swap out of an LLY to LBZ, and the swap of a 5 spd. to a 6spd. tranny. I know that the pcm has to be programmed to the LBZ and the tcm has to be changed. The LBZ is a, I think a cad program and the LLY is OBDII port. Is there a way around this? I guess my question is, is it worth all the trouble? I'm currently running about 575-610hp and about 850 torque.