Alot.
no 250's in gen are not that powerful is it was a 500 i would do it but i would keep the kx if it was a 250 the kx is way faster
if they are both two strokes should be pretty much the same.
Search for 99 Kawasaki KX 250 and you should find all the info about the engines. From what I have read there are some differences in the two. Hope this helps you out.
no 93 kx 250 had more performance parts on them
a kx 250 is about 4 ft tall
10 to 12 kg/cm2
57 hp.
800ml
my 99 model kx 250 does 85 mph
my kx 250 is not getting spark
yes
230 ibs without fuel