I have a few NIB OEM high-resolution (or fine movement) step motors originally intended to control the read/write arm of an early disc drive (RMO3 if you need to know). These drives were the size of a top-loading washing machine (and looked line one, too). Each can hook to another to synchronize together.
It is just nutz to consider using these (or any good step motor) to run dual carbs in a fly-by-wire way?
If it is nutz, I'll just throw 'em out.
Oh, the RMO3 had a massive 67M of storage. :)