I have a few basic mods done to my ski. MSD enhancer, prop, grate, red pipe.. I'm ordering a b-pipe this week. The head has been slightly milled. I'm at approx 150 psi (4,600' elev). I'd like to get a little more punch out of it without spending a ton. I'm hoping the b-pipe helps some. What would you do next? Billet head with increased compression (I'd like to stay with pump gas)? Thx