First- define "beat"...track, strip....???
Second - sell the v6 and buy a v8, this will actaully be CHEAPER in the long run!
If you can't sell it and buy a v8, find a different competitor
You've got to make up 140hp or so and it's gonna cost you thousands! Then when you do catch up the 5.O can get a canned tune and a cai and be 40 hp ahead of you again