I would think you could get all three o-rings locally, but perhaps not all at any one dealership.
If you go "generic" at a place like
http://www.hddistributors.com/, the three o-rings are 61mm x 2mm, 50.5mm x 3.5mm, and 39.5mm x 2.4mm.
If none of these work, I have the football and can meet you somewhere.
Dag has made an easy reference for us here:
http://www.valkyrienorway.com/partsfinaldrive.html