Outer Limits 4x4 Board

I made the mistake of thinking that all GQ and GU's (wagon) had the same drive shafts. Does anyone know how many different sizes there are? Do the smaller ones fail if you put more hp through them?

Not sure bud i know the flanges have a different bolt pattern and are smaller if your chasing a shaft ive got one out of a gq and one out of a gu you can have it for 50 bucks