There is a fella that is interested in buying my 454 i have for sale to put in his 4x4 pickup. He has (I'm reasonably sure without having actually seen it) a 4L80E od transmission, but he wants to put a carbureted, non-computer 454 in the truck. Like me, he's an analog guy in a digital world. I told him I thought there were stand-alone computers for just the transmission available, but I know absolutely nothing about them. I'm not a huge fan of slush boxes and limit myself to TH400's and an occassional TH350. His truck sees some heavy towing and hauling so he needs to keep the bigger tranny that I think he already has. Doing a tranny swap would also entail a t-case swap and probably driveshaft mods, too, and I'm sure he wants to avoid all of that. How difficult is it to run a computerized tranny behind a non-computerized motor?