Yuk! Stroker? I don't think that company has even sold one kit.. or even made one. That pic seems to be a universally used picture. And a high revving stroker is an oxymoron. I take my KA-T to 7500rpm. I'm running JWT cams. Need their cam gears to retard one cam.. but other than that, I'm really happy with them.
But.. the piston speeds on that stroked motor at 7k are only 50fps slower than mine at 7500rpm. 300fps faster at the same rpm.
Destroking is the way to go for high rpm duty.. not stroking. Unless you really want a torquemonster NA.
-Jeff

Edit: Cams really open up at 3500, and make good power until 6500.