I also recommend calling IMM engines because he is very knowledgeable about the small Mopar stuff. I have used him for years and his porting is excellent (not to mention his machine work) and he is honest and not super expensive.
Yeah Brian at Indio Motor Machine he is a small block mopar guru I had him spec out a custom ground cam for my small block stroker. When it comes to small block mopars give him a call he will know exactly what should be done.