340 radiator

Ben Drinkin said

Thanks guys. I'm betting a 70 Dart 340 radiator will suit my needs.

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Looking myself
#29989944 is a 22" 318 a/c radiator and the #945 is a 22" 340 with N51 (HD cooling I suspect) I can't confirm but the 318 is probably a 2 core and the 340 is probably 3 core.