The headliner is in and looks great. Thanks for all the help. Here is how I replaced the headliner:

Purchase the headliner and spray adheasive
Removed the roof panal from the vehicle, 4 torx bolts
Removed the old headliner - The cause of drooping is usually detriorated foam.
Gently clean the old foam off the fiber panel - rub or brush but get as much off as you can
Mask off the metal trim - don't want glue overspray on the trim
Trim the new headliner larger than the panel
Put the new headliner on the panel and roll 1/2 of it back over itself
Spray adheasive on 1/2 of exposed roof panel and1/2 of the exposed foam sideof the headliner
Wait til tacky (follow the adheasive instructions) and roll the headliner so glue sticks to glue and smoothheadliner out
Spray the remainig 1/2 of the panel and headliner as above
Trim excess headliner to about 1/2 inch more thanneeded all around the trim
Take a DULL ROUNDED CORNERputty knifeand tuck the 1/2 excessheadliner under the trim and the edge with the DULL putty knife.(this took about 1 hour, be patient and try not to tear the headliner!!!

This is what worked for me.I would guess about a total of 2 hours?Good Luck!!