My son and I are doing a 383 budget build for his Superbee. This is what we are working with. 69 383 HP stock bottom end (very good running just pulled from a charger 3 months ago) 906 heads w/about 5000 miles on them. We are going to run a set of Hooker header, weild intake and 650 carb. My question is I have a new in the box Mopar performance cam that is a 509 lift at 292 duration do you think this is to big of cam for what we have. If not will the stock springs work? Also the car is a 4 speed.