[Bonos]

Being that you have a 9'' you can remove and replace the entire hogs head with another unit. you can inspect the axels as "undy" had stated when you pull the axels to replace the hogs head.when axels are out count the splines to find out if you have a 28 or 31 spline.
THE JOB IS VERY EASY IF YOU ARE ONLY CHANGING THE HOGS HEAD UNIT.

Bonos