....to all of U 2 !

But on these heads ? .. I am going to have some WET-flow work done that will enhance low rpm air/fuel mix and swirl. It will actually reduce the higher rpm range of this engine even further.

And since the chambers of these heads are so large - and higher compression and minimum quench are needed ... a set of custom pistons are probably going to be in-the-works to make a premium tow package come together.