My intake is not angled, base or lid. I have an Indy single 4 that is the same way. I'd guess it really messes up the fuel level in the emulsion tubes and bowls. The Chrysler crossrams are angled. The RR2 is 1.5" shorter than the Mopar crossram so there is room to add spacers. Angle milling would work for tight clearance on other cars. I'll contact my carb expert and inquire about angles and post here.