wut off a 300ex will fit a 250ex?

[klutchbuster250]

wut parts of a 300ex would fit a 06 250ex?i know the shock fit but do the bumpers fit also and what about the a-arms? and i mean with no modifications at all just boltright up

[250ex13]

I've seen people put front shocks on them
othe than that the bars, tires, hubs and carb fit. Oh and a cr80 shock will work great as a rear shock on the 250

[klutchbuster250]

if i get a 300ex carb will it make a diffrence, will it add any performance to my bike?and thanks for the help