I'll bet one of those sources can hook you up,,, be real surprised if they can't! That machine doesn't look terribly old, not a Toyota expert but ya sure it's a gray? Every gray I have seen was a cushion (solid) tire machine, not that I have seen it all by any means! Could it be possible that number is a serial and not a model? Never did a clutch on a Toyota, however did a few on Komatsu's and most of them you do not have to pull the engine or tranny,,, they have a split shaft, remove a clip, pull a pin, slide the shaft, take old out ,put new in, and run,,, 3 hr job, tops.