Upgrade your Predator or Ducar 224 with our exclusive Stage 2 kit. While our competitors kits use an ARC billet rod designed for the smaller 54mm & 55mm cranks, (which requires an awful lot of grinding to the inside of the block) our kit utilizes EC"s "Wildcat" billet rod and a short flat top piston designed for the 224. Also includes Dyno Cams new pre-clearanced 224 camshaft. This combo requires a lot less clearance work to fit. With that said, this is still not quite, a drop in kit and will require very minor clearance work to the inside of the block.