I deffinatly agree with D_C. All I have to add to the whole thing is just this.
I dont care how much power you have, but if you aint got traction, YOU AINT GOIN NOWHERE!! pulling is simply all about traction. Yes lots of power will get you there quicker, but with out traction, it aint happn'n. To get a good balance of both. Seems how not much info is being passed on about the original question, I'll give you what I know.
The fundamentals of a good pulling truck are all a combination of these:
*Ladderbars: to keep axle wrap, and wheel hop to a minumum.
*Lockers: some sort of either, locker, limited slip or even a spool. At a minimum, something in the rear to get both those tires moving.
*Leaf springs: heavier, or more, leafs in the rear. Simply to hold more weight on the rear, to add to, Traction.
*TIRES: A good set of, I'll say mudd'n tires. Why? TRACTION! I couldnt give you specifics on whos tires, and which ones to use, so use your best judgement here.
*Those are simply for traction, so I'll list some other things here:
*Ceramic coating: OkieGringo mentioned having your pistons coated, EXCELLENT idea! Our pistons being aluminum, the last thing you want is to melt one down in the middle of a run! $$$
*Pistons: A lower compression piston. from what Ive heard this will alow for more boost, and lower EGT's.
*GUAGES: I personaly gotta have em, the more, the better. (for me anyway)
I like to know whats going on with my truck, obviously if something is failing durring a run, I want to know, so im not wasting a 4 thousand dollar motor!!
*Propane: IF ALLOWED, this allows for a more efficient, powerful burn of the diesel fuel. hehe also like i said POWERful. check the rules first!!
*Tranny stuff: I see you are using a C-6, so.... A better Torque converter will help but the power to the ground. And anything to help that thing hold up internally, kevlar bands, ect. (consult a local race shop or trans shop, for very heavy duty racing, pulling, towing items.)
*Driveshaft hoops: for safety purposes these are a good idea, IF a U-joint should fail, these will help keep the flailing driveshaft contained!
*Weights: Some sort of bracket to carry some tractor weight on the front end to help keep that planted on the ground for more, TRACTION. But only if allowed, (check the rules here too)
This is just a list of things that I can think off right off hand, Obviously the stronger you can make things the better, axleshafts, u-joints ect. use your own judgement, and learn a few things from the other guys. But just remember to HAVE FUN doing it!
Oh and on the Intercooler, I have heard of guys disconnecting it, and running straight into the manifold, reason being the loss of boost through the IC, and seems how your going to be going at most 25 MPH (thats on the extreme high side) that IC isnt going to cool the air charge much for a puller.