This may not help at all...but....I have a 95 Sierra, and had big plans, drivetrain, suspension, brakes, etc etc. I was going to throw 15K at it. I wound up keeping it stock, and bought a Lightning as a second vehicle. All I can stress is SUSPENSION AND BRAKES! It's hard to keep the rear planted to the ground, and the acceleration rate compared to stopping rate is horrible.
Actually, who cares, it's fun!!