I know the viper is THE 90's disc but I may leave that advanced 90's overstable technology behind for a three disc "80's" (?) setup of classic aviar (84'), stingray (87'), and roc. The rancho roc is somewhat newer tech but according to Dave Dunipace the San Marino variant was introduced in 88' and the Sanny is just too close to the Rancho for me to feel anal about it. Another cool limitation might be Aero, Classic Roc, Stingray. Another might be Magnet, Hawk, Cyclone all released in 93'. Or go Ron Russell world champion style with Magnet, Comet (95'), Cyclone. And maybe I should play some rounds with just one aero or classic aviar lol.
I've almost done this set up before for a fun round, but I don't have any old magnets. I did go out with a Ron Russell comet and Ron Russell cyclone though and had a great time.