gas gas still makes the 200 and 300 available for order from spain although I do not believe they have U.S. dealers. both models had motors taken from there high end enduro motorbikes and are race ready stock ...
I have a friend rebuilding one right now and this is all the info I got. The 300 is two-stroke, six speed manual, keihen carb stock, no electric start/kick only, chain driven. Stock suspension has 11inches of front travel rear is 12, disc brakes all around, 3.2 gallon tank. Stock measurements are 47 inches wide. They also have douglas wheels stock and maxxis tires not to mention full stock racing nerfs.
I have seen this bike personally torn down and thhe quality is amazing but 99lrd is right, parts must be ordered directly from gasgas in spain and are outrageous. If you could score one in good condition I would do it though they are siccckkk...
I always wanted a 200 it's like a blaster o steroids ordering one is 10 grand not including shipping from spain. I would bet hands down that 300 would destroy a 250r