Why don't you just buy a stabilised lens? Canon, Nikon and Sigma sell a whole bunch of them that will work on 35mm film bodies; it's Sony that does stabilisation in the body instead (therefore no stabilisation available on Minolta SLRs).
You want an external stabiliser? It's called a tripod.
The Sigma OS lenses are stabilised with the SSM-enabled Minolta AF bodies such as the dynax 7.
Mamiya 645 Super | Nikon F4/F100 | Minolta Maxxum 9/Dynax 7/X-700/X-500/XD7/SRT-101 | Pentax Spotmatic | Canonet QL 19 (GII) | and a whole bunch of glass