Various marks of the Lee / Grant could be made if the hull sides were molded flat with you adding the doors/ vision ports to sides depending on the version your modelling . The different style / size rear stowage boxes , groucer stowage boxes ( on glacis and over the driver ) , later model armored fan covers , bow MG plugs , and even the longer 75mm and counter balanced 37 could all be separate add on ( drill out a hole ) piece . Its the engine deck / rear plate exhausts that might be a pain , but who needs the diesel version of the Lee anyway ? The road wheels / track will be sorted once the early M4A1 kit is released