pretty sure all of the GS / GSX air cooled bikes are the same.........
84 GSX1100 EZ is the same 7" long and they are identical to 82 GSX1000 SZ Katana as well as 84 GSX750 Katana..........
same basic engine / chassis set-up albeit there are very specific differences so that the '6R' used a single battery mounted behind the headstock as opposed to the afterthought of the twin batteries stuck up behind the headlights on the '6'
bodywork is more angular / modern with single headlight (depending on your tastes) but i like them personally