Bet you could find a model engineers book somewhere with a guide to making your own tailstock on an ML7 - those model engineering guys have thought of a way to do anything with one of those babies. Mind you, you'd probably need a tailstock to start with, so...nevermind.
Ger, sounds like my tailstock as i cant find it, used to swage turned parts in to tube protruding from the chuck. 16mm through head stock, shuved a masonary drill down it, couldnt do anything before or after.
Phosphur bronze bearings in headstock and long cross slide.
Oh and it had half a Reliant Robin gearbox on the mandrel.
Totally shot, kept the switch (replaced three times) and the 1hp Brook Crompton motor, was 1/3hp.
Mine used to run like no other ML7, about three times quicker to do something. What used to take me 5 hrs i can now do in 10 mins, ok for learning on and sub 13mm dia stuff.