diesel and propane both ignite the same way, but you don't need propane before nitrous. you just put a intlet theat puts t right into the port. it is crazy power, up to 300hp
diesels are just more economical, the new 6.0's have so much power and torque. with bio-diesel you need a special filter on the fuel system or else it won't feed right.
if you got a nice coat w/ taped seams and waterproofed, it is not good to wash it in a machine. the washing machine will wear the seams right out and you will get wet quicker.