If I hadn't got tired of tripping over all the heads I had I could tell you as I bought a set of the Iron Manifolds to use on the American, but decided to not pursue that area right now. I still have the original 232 in my shed, but right now it has an 81 intake and exhaust in place, so it would be a bit of a pain to try them on it. If I ever get the ambition up I may look into it, just for kicks. I could trace the iron manifolds and send you a tracing though! Mark Price mpriceATwestco.net Morgantown, WV 69 AMC rambler, 4.0L, EFI, 5 speed 65 Ambassador Conv, 327 AUTO, Basketcase 01 S-10 CREWCRAP 4X4 >i'm wondering if the '99-up 4.0 iron split exhaust manifolds would fit >any of the 199/232/258 heads... i know that 4.0 has the tiniest ports >of all. >________________________________________________________________________ >Andrew Hay the genius nature >internet rambler is to see what all have seen > >adh@xxxxxxxxxxxxxxxxx and think what none thought > > > >