Building a Haynes roadster. My donor 1992 Sierra has discs front and back and ABS and I want to use every part of it I can. I was just about to remove the master cylinder but it is a complex arrangement with the ABS hydraulic unit and large cylinder. From what I have read I presume I can't use it at all? If so what replacement MC should I get to run the donor disc brakes and any idea where to buy it? Thanks.

Fiat 126 has become popular. It's what I am using

Brake Master Cylinder Fiat 126, Delphi LM70002 19.05mm Bore | eBay

Thanks.

Will it work with the original front and rear disc brakes?

What fluid reservoir are you using?

What other parts are needed to complete the system (balancing bar etc)?

Please bare with my limited knowledge

A few people on here have swopped from Sierra to Fiat.

Slightly longer pedal as slightly smaller bore.

Should be no problem using sierra brakes all round.

I use the Rally Design dual reservoir.

No balance bar as it's a dual circuit master cylinder.

SEE HERE FOR MY MOD

MK1 Fiesta non servo, as per laptoprob has done but mine is mounted as the original Sierra cylinder.
Couldn't believe the difference.