Dirt track vent..

It was a Magnum build. For the B-Mod engine we used the stock Magnum block and crank. Put Scat rods in it. Used the GOOD EQ CH318B cylinder heads(LA intake pattern). Weiand Stealth Intake. Hughes Engines spec'd the cam, had to be hydraulic. We were going to do the ever popular 1.6 chevy steel roller rocker on the Magnum heads. I'd still like to know how this is done properly. To say that the geometry was DOGSHIT is the understatement of the century! So, we just used the factory stamped rockers. Never an issue. Sometimes the KISS method is best. Pistons were a custom dish to yeild 9.0-1 compression and still have good quench to the head. exhaust was your garden variety Schoenfeld Mod headers.
what vehicles are these heads found on? Like i said, im learning small blocks so i have no clue.