Cab,

Thanks for chiming in. I will go ahead and order the one-piece used with the 4.15" stroke. Once I drop the pan again I will mock up to see what is going on. The one-piece and the steel windage tray had the same height but then you have to add in the thickness of the gasket which drops the steel tray lower into the pan. The plastic one can't be tweaked like the steel one so it either fits or it don't. The only other option I see would be to create small slots in the plastic pan to allow clearance for the rod hardware...

68jim