I don't have the Schrik inlet manifold, but I have the rest of your mods and I have dyno charts ranging from 199 bhp and 200ftlb torque to 210 bhp and 206ftlb torque. Not sure that the Schrik would add that much more, probably smooth it out a bit better. Don't forget you will need to de-cat it and re,map it, otherwise it's a waste. If your serious about ITB's, when you've got the head off for porting, why not increase the valve sizes as well, maybe look into flowing the throttle body also (but some say you need some sort of turbulence, so don't go too mad). ITB's will they add more power?? no