There's also these XT Shifters which are in good condition, i've had a look at the XT SLR U-Brake and it's not to bad but certainly isn't mint, also it's missing some bits which i could possibly make a good one from using spares.
That'll be the M732 XTll groupset then, M735 came in 1990.
I may be able to help you out with some silver cantilevers,rear mech,front mech i may have the U-Brake,i'll have a look after my cupper and see where it's all hiding.