[John Brown]

IF wheels came mostly on 69 and 70 Pontiac Grand Prixs, but there are documented 69 Camaros that had them too. That was mostly a Van Nuys deal on the Camaros so that wouldn't apply to a Nova. It may have been that Norwood was low on XT's one day and could have substituted IF's if they had them, since they are virtually identical.