That's where the ports are oriented on a stock mw head......... To make it so the stock manifold lines up with the head..... I just match it to stock.
If you overlay the mw gasket on top of the std gasket and line up the bolt holes you'll see that the mw port opening extends above and below the std port opening.
Same gasket on a factory mw head:
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
