For those looking for more info. It's done by Luxery Details in Framingham Mass.
www.luxurydetails.net
you either:
a) give them your car for 3-4 days.
b) ship them the headliner and then just bring your car for the install
c) ship them the headliner and they ship it back and you do the install on your own
Got quoted $2300 for the headliner, a,b,c, pillars, sunroof panel, visors, and the cover above the third brake light, all installed.