Drivetrain Unlimited built the strong Chevrolet 383 stroker V8 with tuned port injection from Street & Performance. The V8 is mounted in the YJ using excellent motor mounts from Mountain Off-Road Enterprises (M.O.R.E.). Boyd had quite a time finding a radiator that would do the job in the extreme conditions this YJ sees. Even though there's a Be Cool cap on it, the aluminum radiator Boyd ended up with is from Advance Adapters and keeps the mill running cool in 110-plus degree F southern Utah summer temperatures. Also under the hood is the QuickAIR2 air compressor that supplies the ARB Air Locker, a Howe power-steering reservoir and pump, and an Optima YellowTop sealed battery.