Hmm, not sure that this would help, from the Ruger site:
SBA9622 96/22 Scope Mount Base Adapter 4.10
A07000 Mark I & II Scope Mount Base Adapter 21.00
A07001 Mark I & II Scope Mount Base Adapter, Extended 22.00
I'll go check the fine folks at B-Square and Brownells next, but in the meantime if any of you have any rigs please chime in.
(relate to that feeling of new cool toy, but can't play with it for a few days because the batteries will be there next week, etc.?)