once the lq4 is installed in my truck anyone got an idea of what i can expect in the quarter? everything is stock, and its a 99 rcsb. things im looking at changing later for performance include full exhaust system, nitrous 150 shot, heavy duty trans(next upgrade), 4.10 gears(maybe a new diff?), cam kit, stall, ram air intake with functional hood nostrils like NITROUS's but for my 99. any before and after predictions???