Only rad. I found was Rock auto for 67 dart rad has core height of 17 3/8 in. which is probably taller than oem for your 63. ut might work, you just need to measure The width should be same, but yo might have to drill a few new monting holes. WHO hit the caps!!???? 63-6 a body should be same, 669 same, not saying a rad for a 70 duster will not work. I have bought slant rad new from O reilly for 71 duster, 79 volare in last 2 years. I had several 63-5 darts and cuda slant cars couple years back, and NOT sure what I did for rad back then.
