hello guys atm im on with my rst and basicly ive got my shell and its painted and restored, So i started to rebuild it and thought i would remove my abs now atm i dont have any braking system at all on the car and just refitted my servo ,

i thought i had every thing coverd but was reading through some post's on PF and see that i need a bias valve if i remove the full abs system if this is so any idea's where i can get a bias valve from plz ?

any help welcome