Just stick with your 318 manifolds and run dual exhaust. You aren't racing, most of your threads frustrate you and others... and that's just typing words. Just wait till you go to install headers, plus the price (I've seen how prices affect you).... just stick with the 318 manifolds.
Thanks 318willrun, that's what I'm going to do. With the help that you and others have given me I'm sure that it will be a fun car. Any particular mufflers I should consider?