"High Performance" VIN ID

For rebuilder/core purposes, probably very little if anything--did you find a good used 400?

I get that. But, what did Chrysler mean when they did this? It has to mean something. I think it has to do with the heads but not so sure.

Yea, got the whole drivetrain. 400 HiPer "P" model, 727 3 speed, 9-1/4" sure grip. Gonna do fit & mount check. Then going to go to body shop. It will NOT be a 2 yr. project.