Alan Hobby Flakfanzer Gepard? It is based on Panzer 38t chassis
Tamiya Marder was based on the Panzer 38t chassis
Tamiya' Wespe was based on the Panzer II chassis
So the wheels of Tamiya Marder maybe used on the Flakpanzer Gepard but check it correctly. Manufacturers sometimes have different ways or molding parts.