Still Learning

230 is a gross number I wouldn't worry about
318 didn't really change over the years the stock 4bbl has
a few more ponies than the 2bbl which is easily fix.

Don't get caught up in the hp game. Just pick parts to make a good street engine. 600 cfm 4bbl, stock/performer or similar intake something like Comps XE262H cam. When rebuilt a CR bump and head work or better heads.