The vehicle in question is in my avatar. I've got a 4inch stroke Eagle crank, 6 inch Manley steel rods, JE pistons, etc. Basically, I need to decide if I can upgrade the existing combo, or if I'd be better off going to a completely new set up. I have 6 passes on this one. I want a consistent, reliable combo that I don't have to spray so much to run well. I'm currently running Track 1's and think I'm pretty much getting all they have. Since I already had the 23 degree stuff, I was trying to see what I could do to optimize it. If the 18 degree upgrade will cost me some coin, I might look into some SB2 stuff. What I could get for what I have now, plus the cost of upgrading my current combo compared to a new set up is what i'm looking at.