i have a 185s works good i also have a carb, cam, from a 200es, can i put this cam in, an will it make any diff to make it worth my time??

 

The 200es and 185s used the same cam, so yes you can put it in.

 

It will also make a big difference if you can find a header and put some breather vents in the air box and jet for your engine then you can run the 185 as fast as you care to hang on
They are a fast pogo stick
Good luck
Ray