I'd drop the rear to at least 20-25psi, i run 18 rear and 25ish front in my truck, but granted i run mostly boggs, but a 10psi difference with the front having more (espically with taller tires)pressure will give you a tire height difference that will help get the front tires spinning faster and keep you running straighter. Since you are in the drags, 1' of mud ain't much, and that said i wouldn't go and build skid plates and such to smooth the bottom out, as that'll just add unnessacry weight.

If running a tree, remember that off the line in the mud you aren't going to have the same reaction times as on pavement, due to the fact all 4tires are spinning, and because of this try leaving as soon as the last yellow light turns on (i do this at the 1/4 mile on a .500 tree), or after the second yellow flashes on, experiment till you get the best/most consisent times, start where you are at now and cut off time till you nearly redlight and then do it that way all the time.

Then weight loss , radius out the fenders and remove as much of the inner fender as you can, remove all unesscary interior panels and sound deadener/carpet/etc, then remove as much body work as the rules will allow within your class, also go under the frame and remove any unesscary brackets and wires, you'll be amazed at what you can take out (like exhaust heat shields for one thing), for now thats all i have .

 

Oh trust me lol the body is as far stripped down as they will let me. It sounds like a big tin can if you drive it down the road. Hey I gotta qeustion. The tranny in my Bronco I've had re-built with a shift kit. It's a C-6 auto. Would I be better off letting it shift? Or would I be better off shift myself from 1st,2nd then into drive? I can't seem to find much of a difference in the two. They both have good and bad points.