Phatbox info/advice

[just_say_meth]

Thought about getting one of these for a while and just looking for a bit more info. I've read all the posts on the search but not really shedding any light.

Car is a B5.5 highline with Gamma HU and 6CD dash mount changer.

Will I be able to operate a phat box from this HU and will I still be able to run the CD changer too?

I just like the idea of keeping it oem and I'm sick of the standard changer but it's always useful to use I guess.

Any help/advice appreciated

Andy