Stage I and II hybrid build. Production 4.1L block, stg II alum. heads, 3 5/8" forged stroker, H-beam rods. Will need "full skirt" pistons, because of rod offset. Street and road course motor, possible E85. Since port sizes of race heads and intake manifold are huge,(lower velocity), blower is to compensate. I suspect cam choice will be critical. I have a short course billet mechanical roller. This might be ok, to get started ? Car should weigh about 2,200 lbs., with Turbo MR2, 5 speed. Suggestions ? Thanks, Art.