What size are they? Factory tire size equivalent to radials is something like 205 75 14 or what I like to call bicycle tires. From the factory, these cars did sit higher in the front that the rear. I do think it could some some more meat in the rear though. I run 275 60 15 rear and 215 65 15 front on my 70 and 255 60 15 rear 215 65 15 front on my 69.
Tom
