Found this..
"The Singlecut was the original model, then some time after the Gibson lawsuit got dropped, PRS split the line into the SC245 and SC250. The SC250 was pretty much the earlier singlecut with hotter pickups, adjustable stoptail and locking tuners, aimed at modern rock/metal. The SC245 was the more vintage offering, with a shorter 24.5" scale length, kluson-style tuners, non-adjustable stoptail, and more "vintage" SC245 pickups. The SC250 wasn't a great seller and didn't last long; the SC245 lingered somewhat longer in the lineup, then disappeared and was resurrected in the likeness of the SC58."
Essentially I can get an old singlecut and upgrade the pickups, adjustable bridge and locking tuners. Basically an SC250.