Modern Cylinder Head - Two sets of the Sidewinder/Promaxx heads showed up for CNC Porting. One will get standard port window, the other will be Max Wedge port. I'll have flow #'s
PRI 2019: ProMaxx Performance Cylinder Heads Span The Market
Small block Mopar ProMaxx head testing - Moparts Forums
Mopar Chrysler Aluminum Wedge Cylinder Head, Mopar Chrysler 70Cc Cylinder Head Exporter China - Cylinder Head for Chrysler Mopar Big Block, Dodge Chrysler Jeep 3.7l Cylinder Head Supplier -