headers for big block A body

whats the best fenderwell headers for a 440 1973 duster? i cant see were any under chassie will work, have a set bought off a friend, he said he mock them up in a 68 dart with a 400, and they clear. with the fenderwell need a set that will hug the cowl is there a tire problem rubbing ? any used ones for sale or part # for new thanks