B1 heads?

B1's are wedge heads, the Predators are a canted valve setup and some classes don't allow/penalize them. There really isn't anything comparable from Indy, maybe the 600-13's, but I have no experience with those. The B1 Originals are commonly ported to over 400cfm, the moved centerline heads can go 20 more than that. The two B1 offerings over that, the PSO (unicorn) and TS(even more unicorn, canted valve) are basically experiments for the user to resolve on their own. In that respect, the Predator is the way to go, a far more developed package, or at least publicized, which might well be near the same thing. Any way you slice it, you're going to be massaging things, but it's the difference between rubbing on a college cheerleader, or rubbing on a sumo wrestler. S/F....Ken M