Thanks Andy, I did get the Summit tray made for the 4.15 crank and it fits fine. Fits with the Milidon pan good too.You don't need the deeper windage tray if you used 2.200 rod bearings and modern rods. If you went old school then you'll need more clearance. The problem with the deeper windage tray is that it might not fit with some oil pans so you end up with a ripple effect of parts. If your shortblock is together then try a factory windage tray to see if it fits.