I wouldn't get a predator cam. If you do, get a hemi cam. Hemi Predator's use the same camshafts as Honda gx200's and clones. The non-Hemi Predators use a different cam. I'm just guessing it would use a clone cam (gx200, clone, Hemi Predator).
But CALL ARC or DYNOCAMS!!!! Ask for tech support, not sales.
800-521-3560
http://www.arcracing.com/
(910) 655-9035
https://www.dynocams.com/
They will tell you for sure, I'm just guessing here. Never looked into 208cc engines.
The head won't be a problem. You could put any Predator, Honda, Clone, ... head on any of these blocks.
You might even be able to use a predator crank and make your 208 a 212. I dunno? Got to take it apart and look and measure and google and use other forums too.
I'm guessing many parts from a Predator would fit, but cannot say for sure.