I am working on a customer's `68 383 Dart GTS original car and he would prefer aftermarket valve covers for some bling, he had some Mopar Performance cast ones but they hit the exhaust manifolds and the covers bolts aren't even lined up yet. So we are wondering what other choices do we have. I took off the steel chrome type that look original to me and I like them but he doesn't. And no headers he says luckily . Thank you.