Preditors versus B1? It must be a given the predators could be set up with superior hp potential, yet still run a cam that won't beat everything to death. Also the non paired exhaust is a big benefit i would think, keeping heat more even between the center cylinder exhausts promoting better valve seal. What goals do you have for power, engine size, rpm range? I am guessing a predator motor could be set up to have 1100 hp and yet still have reasonable number of runs between rebuilds/ maintenance?