I bought the heavy duty from Carter thinking that was the smart thing to do, but its a thicker core and was uncomfortably close to the fan. I'm running a 235 with a short shaft. Plus the mounting holes were off even more than DADS50. Figured as soon as I drilled one hole to relocate, all bets were off on warranty. So I sent it back and had mine re-cored. The radiator shop recommended aluminum (a little cheaper)but I wasn't ready to give up the origonality. Not sure if the standard radiator would have worked better or not.I'm satisfied with the end result but would have been better off re-coreing in the first place.
