no removal of anything. Since I am a relatively large guy with big hands(I don't want any comments on that) It was a PITA. Someone who has smaller hands will be able to do it with ease. JUst a hose that you can see between the alt and PS pump. Runs down from a nipple on the intake that hooks tward the front of the car and loops to the back into a check valve then continuing to the holding container. Hoses are relatively expensive along with the check valve but it is well worth it for me. ill leave a thread for the diagram on Subaruparts.com
Vaccum hose diagram
It is the second diagram with part #'s
H503112-hose
H50336 -hose
16195 -Check valve
Hope this helps anyone looking to do the same.
Tom