The 73 to 87 chevy or gmc is what i used for my truck. Its a ton truck with a 9 foot flat bed. You sound as if you are looking at about the same type of truck except with a utility bed instead. Check out the photos in my signature. If you will notice my truck is a ton truck which had the smaller fenders. Your fenders have a bigger wheel opening. I used my original steering column and two u-joints to connect to the 78 model gear box. I have a 454 that wasnt a problem to work around. Dont get me wrong it is a tight fit but still not a big deal. Spend some time in the gallery looking at the photos, there are a few conversions like this in there. May be difficult to find but they are there.