RS Gearbox Lube System

[fetuhoe]

I am planning to design a gearpump to fit into a 915 transmission to reproduce the original Carrera RS unit.

I have a spray bar, pick up pipe and designing the gear pump and machining the transmsission casing isn't too difficult but I don't have the cover that fits on the outside of the transmission.

Making patterns and producing new castings isn't a problem but I need an original part to make drawings.

Does anyone have such a part that I can beg, borrow or buy?

I know I could make up a system using an electric pump but this poses some eligibility issues and I would like to use a mechanical systemif possible.

I have a system at present that uses a modified Sportomatic pump but it I would like to make a system that is completely 'period'