Just though I had better learn to tune something. New to it all. No one in northern Alberta seems to do any tuning. I am working on a 89 GMC dually resto. It has a 454 tbi with th400 and half moon gauges. Am putting in a 1973 454 with alumheads and a rv cam. Also taking out th400 and putting in a 4l80e from a 91 dually. Also putting in a gauge cluster with real gauges (not half moon) from a 93 K2500. Hope to get it all to work so I can pull my fifth wheel. This site seems to have a lot of info, so I will start siffting through it all. Things sure are diffrent from my old racing days in the 70‘s.