Saw, you mentionned Roland SC880.
This module is the same as which is used
on the Roland Arranger Keyboard G 1000.

As I do own a G 800 (which is a SC88) I can tell you that the clean guitars are Fender strat and the jazz guitar is Gibson ES175
(and yes I do own both guitars as well )

So basicly Nigel is wright that it is Fender and Gibson based sounds.
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Keyboards/Sound Units: Kurzweil 2600S, Roland VR-760, Acces Virus C, Roland G-800, Akai AX60, Minimoog, Machine Drum, Roland R8-M, mediastation x-76