What Car Can I Find 302 D0oe Heads In?!

Get yourself a set of GT40P's and forget the early castings. The P's have a smaller 58cc combustion chamber over the standard GT40's and are far more readily available than the D0OE's. Keep in mind too, the D0OE's should be upgraded with hardened exhaust valve seats before trying to run them with unleaded fuel...which will require machine work that adds to the cost. D0OE's were the ticket before the GT40's hit the streets, but so many years later, you can't get a set of GT40/GT40P's for peanuts and are better performing heads to boot.

To be frank, unless money is really tight, or you race in a class that requires factory iron heads, I'd save up a little more an pick yourself up a set of aluminum castings. Any of the above mentioned iron heads are going to at the very least require a decent valve job and new valve springs. That could add another $200-$300 to their cost. For that price, plus whatever you'll pay for the head, you'll only be a couple hundred dollars away from picking up a set of good used aluminum heads, that will not only come complete with performance valve job and springs, but will easily outperform even the most heavily modified E7TE, GT40/GT40P, or D0OE iron head.

Just food for though.