Well,
I found the info on mkvtech (and I didn't know about that site or it's credibility).
Re:EVGA e-GeForce 8800 GTS SSC, giving 112 stream shader? - MVKTech Support Forums :: NVIDIA GeForce 8800 GTX 8600 GTS 7950 7900 7600 ATI Radeon HD 2900 XTX X1950 XT X1900 X1650 - MVKTech
PPL tried on both cores (A2,A3) to no avail.
They also come with a weird conclusion (dunno what it's worth).
Some would say that the SSC core could be a GTX core with 16 sp disabled...But suggesting to try to flash to GTX BIOS seems REALLY RISKY...
I realize that both GTS and GTX are sharing the same G80.
But the question is: what do you think?