rottenchester carbs

I guess I should have mentioned this before but a friend of mine has a 73 duster orig slant 6 now it has a 318 that was installed by a p.o. and it had a chevy raidiater and a rottenchester 2 barrel I eat and live mopar have all my life and in 25 years of twisting wrenches I have never seen a stock chry. product with a rochester carb I too have seen some bodies basturd with a cheby carb (like that would fix it) or some other brand x part installed oh well I guess those parts have to find some way to go fast