To take the PSO and just spread it out, to go over a 4.625 bore would immediately help the head................ Can it be done with a Wedge head....absolutely, just not likely in the current port layout. And THATS where the Mopar faithful balk, because of the LOOK. They say it LOOKS like a Chevy head, yet no Chevy ever came from the factory with spread intake ports. So maybe it really looks like a Ford.......LOL!!!
