Looking at my battery trays today which on one is missing and two others are rusty contemplating what to do. Buy them overseas or try to fix one of them. Then I thought of battery tray liner. Made of plastic or fibreglass that would sit inside like a paint tray liner and protect the surroundings. Would mean I could fabricate a simple tray pop one of these in and look and work better than original.

Only seen Motomobil with battery trays listed, I bought a couple but they are facelift MK2 MK3 so look different on the base, but are the same size as MK1

expressed steel uk have 2 types listed, M1E17 & M2E20. Both listed under mk1, no idea how they differ to each other.

most likely one is 4 cyl and 1 is 6 cyl the 6 used a bigger battery
or one is Pre facelift and one is facelift