The 4 barrel is a good idea. An aluminum manifold with a edelbrock performer carb work real good right out of the box. Although it,s 600 cfm you will use the primaries most of the time. Q- jet carb is my favorite but you have to rebuild one & play with it to get it right. The ram horns are great manifolds & are all you need unless you are going raceing. I take it you have dual exhaust. You might also think about a little upgrade in the camshaft.
