Since the vehicle will only be somewhat competitive and you've not raced recently, I don't suggest getting special foams for the vehicle. The stock foams in the 2.0's are fine.

Also, 5/5/2 or 3 diff set up is a more common. Use the springs it has for now and see how they do. Maybe 35 wt shock oil all around or 40f/30r, Front axles slightly above level, rears level, then get the X-Ray manual on-line as Mike suggested to fine tune from there.