whew after mega hours of research, I found out it is a Pensa Suhr. You can get one from Mark Pensa's Music Shop in New York. Knopfler aquired this guitar in 1988 and it's first gig was Nelson Mandela's 70th Birthday... He also has a few others. The builder was John Suhr who is now at Fender. It has EMG pickups and active tone control...

Who's the man, huh?

damn spankey beat me to the info... I guess he's the man LOL