RE: Evolution 35 on Midwest Cap?
Have the ZDZ40 and MVVS35. Like the MVVS35 better. About the same power, less vibrations, easier starting.
So I would choose the EVO over the ZDZ40.
However if you have not planned to use a tuned setup, I would go for a 50cc class engine. DA50, MVVS(EVO)45, or ZDZ50NG.
In our club the fly the MW-CAP with a ZDZ50NG and in cowl muffler. Excellent combo.