can I put a factory navi in my car, and what about an intercooler my S/C

 

yes and yes.

 

But why bother posting something if you're not going to be helpful...

Audio/Video forum is here:
https://acurazine.com/forums/audio-video-electronics-navigation-22/

Looking thru the DIY/FAQ thread in that forum, will turn up alot of good stuff like this:

http://home.comcast.net/~beinstein/NaviInstall.pdf

For the intercooler, search for Hope Systems here. Scalbert made a limited number of intercoolers and some of 'em have come up forsale in the black market.

 

I think there is a navi set up on the Blackmarket right now. I sold a set up to a member and he did the conversion. It is a pain in the ass but definately do-able. If you buy a set up be sure that the harnesses come with it.