I personally really like the cams, they come on strong in the mid range and pull forever it seems. Bottom end is ok, feels a little more than stock. I'm still tuning mine (ignition/carb) so it should get better. From just a slow rolling speed in 1st and 2nd, and twisting the trottle only, it lights up the back tire with no problem. Also, the bike sounds really good at idle. Since your using a flat top piston I would mill the heads and probably use a .030 hg, I know S&S suggest 9-10 cr, I think mine is 10.25 according to big boyz calculator. Hope this helps with your dicision.