To B or not to B-5.0 GT40 Crate Question

I would probably stick with the E303. Not my favorite cam by no means but it seems to make decent power. May give you some driving and/or tuning issues though.. pretty common.

I would got with a B cam thats what I got for my new motor I don't think the E cam is worth it. The B303 is a proven cam that makes good power.

Third option would be 1) order whichever is cheaper, 2) put the motor on a stand when you get it, 3) pull the cam out, and 4) put either a custom or one of Comp Cam's comparable XE grinds in. There are other cams out there that will either match the B/E cam on the top end while making more bottom and mid range, or will match the bottom end of the B/E while making more on the top end. It will cost you a bit more, but I suspect you'll be so much happier with it that you'll want to sell the Hyundai and drive the Stang daily.