318 vs 340 Questions

phase #1: Tune 318 aka cam headers and small 4 brl. If your happy with performance grate, sell 340.....if not............
phase #2: 340 stroked to a 410, moderate cam good 3 or 4 angle valve job on 340 head.......your 340 didn't come with head right?

Ok scratch valve job! buy some RHS Heads with 2.02s