Cosa Disc brake?

Hi guys, my cosa has terrible brakes even with new shoes and optimal setup, so i would like to change to disc. Has any one done this? will a px type work or maybe weld an et4 fork to the cosa one?? any constructive feedback is appreciated, and also what about the rear?

Mickcosa 

still no reply, was the question too difficult???

hiya mate

take the front wheel off and measure the shaft if its got a 20mm shaft

then it should be a striaght forward change over.

cheers ill ave a look

[8-|]come on lads!!