I have some old Deore LX Canti callipers - fitted with new'ish v-brake pads (so parts are easy to get). Includes straddle wire (I upgraded to XT recently)
Like here:-
Happy to pass on FOC - they work fine, I've got long bolts for them - ended up re-using the old fitting bolts as the XT bolts were too long for my frame.
PM me if he'd like them. NO COST !!!!