Sounds like Scott's truck. The system he uses (and the one I use) is a safer variable oriface than most of the home built staged or fixed oriface systems. Propane is really quite safe and sane as long as you don't try to eek out enery available hp. Just use it to compliment your diesel fuel and don't try to run on propane and you will be OK.

95 F350 - we'll just say modified...