if you are going to use the alum heads you have to go above 10-1 comp otherwise use the iron heads. carb is to small. little stiffer on the converter. you won't know a whole lot until you how far in the hole the pistons are. so with your deck height and crank rod combo then you will know that.myself i would not build a mopar without talking to hughes engines. you can use your GM comp cam or get a scary name like voodo. i would stick with mopar specific builds. call hughes, tell them what you are wanting to do and use their free advice. just my