It was +2mm pistons hung on carillo h beam rods. +1mm valve heads, ported. ISF treated transmission with ceramic bearings and slipper clutch. Knife edged crank and lightened flywheel. The compression was left relatively low for a race engine. It spun up like no other sv engine. Planned on a few additional mods (+3mm pistons, increased compression, cams, etc.) when freshening up for the next season, but plans changed. Would have likely been 10-14 hp more, but 35-50% less reliable.