Searching other videos of 'Forever' yeilded that the guy is always using a Les Paul (a 1976 Standard to be exact) for this song...digging further I'd found this page...
http://nathanwright.org/2008/09/23/gear-talk-daniel-carson/
..he's very fond of AC 30's (Daniel will typically run stereo into 2 British Vox AC30TB’s (Top Boost))....from what I can gather he uses Gibson Burstbuckers.
In discussions related to him people talk about brightening up thier LP, which I'm no expert at...just found these in a discusions related to him.
(this list is BY NO MEANS indicative of things Daniel has done..just might help you get that tone).
Lower the pickups and raise the adjustment screws.
Install a treble bleed cap.
Install the RS kit or 50's wiring mod.
Real 500K pots.
Aluminum stop bar.
Steel studs and different strings.
A list of his gear as of 05/09
Guitars
Jerry Jones neptune shortie 12 sting guitar
Custom made Nash Telecaster
1976 standard Gibson Les-paul
Epiphone Casino x3
Gretsch Country Classic
PedalBoard
Ernieball Volume Pedal
True bypass Switcher
Diamond Compressor
Xotic AC booster
Fulltone Fulldrive 2
BBE Sonic Stomp Maximizer
Boss RV-5 Digital Reverb
Boss DD-5 Digital delay
Boss DD-20 Digital Delay
Line 6 DL-4 Delay moduler
Boss TU-2 Tuner
Voodoo lab pedal power 2+
Visual sound 1Spot
Amps
Fender 1965 Princeton Reverb
Vox AC-30 1990’s Reissue
Oh yeah and that so called fancy box on top of Daniel’s AC-30 is just an attenuator made by Ultimate.