Looks like it would do the job , but it's in england and you can get them from here :http://www.datsport.com/Tandem_master_cylinder.html
or another alternative is a Sigma master cylinder , not sure which model possibly GH i think , but i have two of them that i did'nt end up using a lil bit to big and chunky for my application , one is brand new if anybody is intersted in it for cheap PM me
Lindz