I have a 99 with a fresh rebuilt. I have 03 heads installed. Forged Crank, Forged Rods, and Cast Aluminium pistons in. The pistons are slightly dished nothing crazy, but I have a full 03 terminator gasket kit in. I snapped a timing chain and either I got lucky or I have enough clearance that when I snapped a timing chain, my valves were good to go. I have about 1000 miles on the motor since then and everything looks good to go. I want to put some boost on the motor. I am looking at a nice 10psi or so. Would it be easier to get a terminator lower manifold and get a whipple or something, or should I just go with a centrifugal supercharger? I do not want a turbo set up because of the exhaust plumbing.