I definitely wouldn't half-ass something like a suspension component, but if there were a tested, standard and easy adapter, I'd use it. Thanks for the feedback.
If I were to go with the 11 inch shocks mentioned above, would I have clearance issues with the stock 4-4 exhaust? Also, do they include springs and for what weight? I'm 200 lbs and I'd probably have my girl on the back at least some of the time (about 100lbs, depending on humidity and other factors).
For the record, I did find a source of adapters, but they require welding to the swing arm. Probably not worth the trouble for a couple bucks.