easy should only take ya a half hr. if that, get the coupler first and the oil they are hard (sorta) to get most of tyme there outa stock

1 take belt off
2 unbolt snout
3 pull snout off remove old coupler
4 put new coupler on
5 line snout up with coupler dont force it should go on with ease if lined up properly
6 make sure you put sum kind of sealant on snout (can get at gm).
7 bolt it up
8 fill it up with the special blower oil (can get at gm)
9 put belt back on
10 you are done