This is by far, the easiest upgraded rod and piston combo to install in the 224 Ducar/Predator and is exclusive to Studz Racing. We use EC's forged rod made for the 223 Wildcat and NR's new 224 flat top piston. This Kit requires some clearance work, but very little compared to when using an ARC rod. This combination puts the piston at deck height in a 224 Predator/Ducar (non-hemi style only) block.