Mopar Performance 576 Heads

These are essentially 308s without the smog pump provisions. A few were apparently sold with T/A pushrod hole placement. The exhaust short and long turn radius were inspired by/more similar to W2 than other LA heads but not W2 ports by a long shot. The designer had other improvements in the prototype 308 heads but only the exhaust side made it into production. The "swirl port" is actually a happy side effect of the pushrod pinch required for the huge pushrod holes for the factory roller cam blocks. Good heads, with some good valvetrain parts added by seller.