[Dominik]

Check the wheelbase and find a chassis to match. You might find that the reading is either 90" or 92", perhaps 95". Any chassis will "fit" under it. With "fit" I mean, it won't.

But you can find a way to attach it to a chassis. Same as the former owner managed to fit an ally body to his chassis.

Don't you have pictures of the chassis where this came off?