Purchase a 914 model kit,a scale 3D shape,the bigger the better.
Add the scaling function of the pantograph to make your part.
Click to view attachmentA plastic injection mold from a model,traced or more accurately panto'd.Later,run the Battenfeld for a few or many thousands of parts.
'70s,I did just that when the client had or requested such a model,a sort of rapid prototyping with a Wadkin and hydraulic follower.
A very handy tool for hand porting cylinder heads,and piston domes,repetition reduced to 25% or so.A system for duplication and scaling.Have fun.