I have a 2000 ext. cab S-10 with a 4.3 and auto. I have upgraded the exhaust to a single outlet flowmaster with 2 1/2 pipe and I replaced the stock intake with a K&N GenII. I am getting ready to modify the MAF and order the Hypertech power programer III. Does anyone know of any tranny mods that can be done with out taking the truck into the trans shop?