As stated above these are all a big help. Heads on a small block ford probably it's worst fault. When buying a intake go with a dual plane type not a victor Jr. A RV type cam will help get some usable hp down low. If you don't want to go with headers a nice dual exhaust will work pretty well. Make sure all of your basics are covered, Good cap, wires, plugs, fuel pump. Everyone has their own favorite brand of part and they all come down to what gives good results for a fair price. I have had a lot of small block powered cars in the past and have had very good luck with Crower and Lunnatti cams. Don't buy too big a carb , a 600 - 650 is all you will ever need. Good luck