'''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
There is more to it than just mounting tabs. Disc brakes put much different loads on the fork legs and different forces on the hub axle/qr skewer. The fork legs have to be designed to handle the torque and the dropouts angled properly to prevent wheel "ejection". You don't just braze disc mounts onto a fork meant for canti's or V-brakes.