I just got the 604 predator in the car and pulled the 572 B1 out. I am thinking about the next step. The question is....should I build another Predator (given the one I have runs .3-.5 faster than the B1), should I try to find a used set of B1 PSO's or M/C's, or just run the B1 I have on NOS to compensate? I don't have the cost yet on the wedge Predator package, but I have several sets of B1 dragster headers, and will have 2 sets of Predator headers. My current B1 combo runs in the mid 7.30's to low 7.40's at Vegas. I would like to be in the 7.15-7.20 range to make the quick 16 bump at the divisional level on the west coast. I'm just looking for opinions which head package would make the most sense and why.