Hello Gabster. Good to know someone is listening. The Chev frame that I am using is a 1950, 162 inch wheelbase with 750-20 tires. Doesnt say on the paperwork anything beyond that except serial number. It is an American truck, I picked it up in Oroville WA because it had a perfect pristine frame just the right length as I wanted a 12 foot flatdeck. Perhaps I should have waited to find a GMC, but I wanted to get started putting it together. I have the 302 sitting in the frame, bolted in at the back but the front mount just sitting on a block of wood to let me install transmissions and rear suspension. Its getting a Clark 5 spd and Spicer 5531 from a 53 tandem big truck. I like lots of gears. If the 302 install presents too many issues, may have to go with the 261 that is in my Canadian GMC for now, but would like to see the big 302 under the hood just for the wow factor. I am in Keremeos just south of Penticton, where are located?