Short Shaft Slip Yoke 727's in Old Airport Tugs?

yeah a lot of them are flange mounts. the slip yoke are out there, but seem to be quite a bit less common.

if you're in the market, there's one on offer up out here.
I've never seen a short one with a slip yoke, but that means nothing, since I know I've seen a tiny fraction compared to some of these guys on here. Have you ever seen one? I've seen two styles of shorty 727s. One with the parking brake drum and the bolt on yoke and one without the parking brake drum and the bolt on yoke, but I've not seen a shorty with a slip yoke.