You will need to check PVC no matter what cam you select..heads will not be an issue. What will be an issue is if you pick a cam that the speed density set up on your car does not like...you will have to consider that as well as looking at PVC.
i had a b cam that cleared but the heads had never been milled and i used stock thickness head gaskets.the speed density didn't like it though until i went to mass air.