I have also had good success by importing the scans into autocad or a similar cad software and then scaling according to the grid or a dimension.
Then you can measure the rest.
I believed that the "engraving" was done from the backside and the front of the badge being a smooth finish, with radius as shown above.
-They could be 3D printed with clear filament (and painted later) but the finish would probably be a bit too rough.
-They could be cnc machined in plexiglass...
Anyone have a good method to produce these bits?
I can draw it and have tooling made (can have them cnc machined at work) but honestly dont know how to make them.
Well, since you are in the US i guess you are buying them at vintage wheels. Maybe they know what backspacing you need? Davidmgbv8 also has a SGT chassis so he also might have the information you need.
I am not used to AISI qualities but seems like 1018 has a higher yield than the en2b. Not a bad feature but requires more violence when forming.
The en2b quality is by todays measures one of the lowest qualities of construction steel.
In european standards it is similar to S235.
It is definitively possible, the question is how much effort/time/money you are willing to put into it.
Most ecu's are specific to that particular vehicle or enginefamily, even under the same name they might be different.
So a generic solution does not exist and every specific engine management...