I gotta chime in and say that, since I snapped my b5 rod when my flywheel came loose on a straightaway, and I ran a friend's backup OS speed in the same car shortly after, and outside of the b5 feeling a bit beefier down low, and the speed feeling a little more linear, there is nothing really to report. I'd love to say that the b5 blows the speed away, but the speed ran great and tuned easy. Only thing I can say is that I won't buy one now that I have driven a b5 back to back with a speed in the same car and one costs $200. I was a bit worried that driving the speed would make me want to get one, but honestly, it re-affirmed my love of the b5. I think I'm going to try a b6 next since I only race buggy.
Wayne