Cylinder head tappet bores machined to large diameter so the cam rode onto the sooner, DLC coated tappets, hollow steel billet DLC coated cams, at early stages used 9/32 valve stem with BDG spring retainers, spring platforms with Cosworth BDG/DFV Schmitthelm valves springs, Nimonic exhaust valves Mahle Motorsport pistons, Arrow Precision did the crank and rods at some point (when they had no flywheel), Primary Designs Inconel manifold, custom waste gate similar to the version used on the rallycross cars.