The later model 6's, 250's and 292's are a lot easier to install than the V8. The stock 292 pulls better than the V8 in bigger trucks because it has more usable torque. It all depends on how much work you want to do and what you are going to use the truck for. On this site I've seen both 250's and 292's as freebies. I bought a complete 70 1 1/2 ton with a good running 292 for $300. Put it in a 54 6100 and love it. Redcoat
