I've gone through the write-up for the Hot Rod cams, and I'm confident in that. But when you start having to mess with cam phasers and springs and such, that's when I get a little worried. Either way though, I know a lot of us are fine with bolt-ons, but when you start talking internal stuff, they're going to want to take it somewhere. And if they do, they'll pay twice as much. Not saying the VSR cams aren't worth it, just giving the options.