Well one of my friends had his 90 K1500 stolen from him while he was at work one day. He got it back now but its missing of all things the tranny and transfer case plus some other stuff. He went out and bought a 02 Silverado HD the day it got stolen so he really doesnt need this 90 anymore. He also has a 79 that he uses for wheeling but its in pretty bad shape. So put the 90 and the 79 together is what we are thinking. How hard is this without buying one of the kits? Has anyone done it here? We will be using the 90 tbi and the 79 th400 and 205 case. What problems will we run into? Thanks for the help.