somebody else (or maybe it was you elsewhere) told me they did 18.1 with propane. What configuration is your truck? mines a 4x4 ex-cab dually, I'm told it probably has 4:56 gears. I'd love to know how much faster it would be with propane, because I'm tempted to do it. Who do you like for the ECM? I'm saving up for one now, but its slow going with a new mouth to feed and regular repairs to the truck that come before mods. I live right down the street from New England Dragway, we'll have to keep in touch, let me know when your gonna come up and run it.
by the way, what is a PS2000?