RS-3 is not the top line Yosh. I had one, they are junk.(dkariores @ Oct. 13 2006,21:47) i have the top of the line yosh and it works just fine, but for drag racing all together brock is the best hands down, not to great for street applications, but very good for racing, I am gonna get a yosh trs 3 dual oval cause i like the sound...
pass on the akro it sounds cool but only like 6hp gains by dyno charts?!?!?