The late-1980s SR800LE came with an Omni-Adjust bridge made for Ibanez by Gotoh and the spacing is 19mm.
So you should be able to use about any 19mm spaced bridge on it. I would look for one with the same (or very close) base dimensions to keep from having a bunch of visible screw holes.
All the best,
SBMM Ray35, Ibanez ATK300, Fender Modern Playa Jaguar, Squier VM Jazz V, Mesa Walkabout Scout