It's a very simple job. I had two issues though...

1. I bought an aluminum housing and cracked the lips off where the bolts thread through... So be careful and tighten them evenly.

2. The rubber o-ring behind the old housing stretched a mile as soon as I took it apart, so I had to buy a new o-ring.

Not big problems, just things that I ran into that I think others should know about. Good luck!