Yes. Same pilot bearing extension. Diff case is 1" narrower than a dash-2 case so the clutch cross shaft is shorter & smaller in OD, too. Thus it's difficult to use the wider dash-2 bellhousing. That's why lloyd Butfoy calls those interim transaxles a 'dash-1-1/2' because they're composites of the GT-40, Mangusta and Pantera ZFs. Not sure but I think there were less than 500 ever made and a lot were junked by Ford.
As for the LSDs, the most desirable version for racers is the early one (GT-40) that doesn't use clutch plates for slipping. Instead, the mechanism uses 'chiclets' very similar to a Detroit Locker. The dozen or so little oblong metal beans turn partly crosswise under cornering load and give a limited amount of slip by ratcheting. On straights, they can be heard rattling in their loose fitting housings. They start wearing the moment the car begins to move. Street guys used to complain about the noise.
Without slip-clutches, there's less heat generated in the diff so no reason to need a ZF cooler in all but very long races. None of these OEM parts have been seen as spares for a very long time. There may have been some home-made.