stock looking engine , BIG POWER |||

The more horsepower you try to make the more they will eat but look at restricted plate racing hp still can be made. Extruded hone ain't worth it porting gives you little.

Cr and Cam would add a lot especially one with extra exhaust duration a custom hydralic roller probably be the best way to squeeze power out. But you go aftermarket heads and intake even painted a good eye will spot it.