My goal is to get around 500hp. To date the mods on my '99 include: HX40, DD2s, Edge Comp, Pusher Pump, 4'' exhaust, guages and built auto tranny. The vehicle is used for both towing a trailer and fun. I'd like not to go to twins ($$$$) as this would mean a new exhaust and new exhaust brake. I've been thinking of propane, but keep reading about headgasket problems. I'd like not to cover the trailer with diesel while towing. I appreciate input from those that have gone to the next level with a single turbo.

Much appreciated!