Photo not poss as I stripped the thing down, the actual brake levers (i.e. the bits attached to the bosses) looks very similar to the "v" but I can't find any reference to centre pull anywhere to buy - given I was using and abusing this thing up until this summer the brakes worked perfectly well so I may just clean them up and refit.

Sketchy and fun are certainly one way of describing old skool MTB's

Oh yeah, I forgot the U-Brake -

I changed the canti's for V's on my old Trek & it worked fine - just had to change the cable routing a bit but then that's what zip ties were invented for isn't it?