Ritter told me he can ma nine his blo k to accept the P5 head. Problem is the head itself. They still have water leak issues. I wanted to build a tall deck P5 hemi motor for 10.5 . But no organization would legalize them in my opinion. A gen3 hemi needs alot more head bolts if your going to a max effort program. Maybe we can get Chryslers engineers to look into redesigning the block and heads to a 18 head stud design. Yes right.