They have been owned by me from new.
Typically 5-6 weeks lead time from the Westfield factory.
Will come with cables(including compensating bracket), hoses, cap headed bolts to fasten to uprights and a set of brand new unused (EBC) pads. Handbrake set-up/adjustment instructions will be included too.
£300 + postage (All items included, would cost >£500 new from the factory).
https://parts.westfield-sportscars.co.uk/suspension-braking/brakes-calipers-discs?product_id=79
https://parts.westfield-sportscars.co.uk/index.php?route=product/product&product_id=1057
https://parts.westfield-sportscars.co.uk/index.php?route=product/product&product_id=89&search=brake+cable&description=true
https://parts.westfield-sportscars.co.uk/index.php?route=product/product&product_id=92&search=brake+hoses&description=true
Suitable discs are- https://www.eurocarparts.com/p/pagid-brake-disc-104590218
I'm happy to box them up and post at the buyers expense, or you can pay now collect in person from Stoke-on-Trent.
These require the golf style rear upright, hence won't fit Sierra or Mazda based kits, unless you've upgraded to the current Westfield Golf style rear upright. As shown below-: the Golf upright doesn't have machined faces on the inside for the lower part to bolt to the wishbones and hence has a rod passing through like this:
They won't fit the sierra upright which looks like this:
More details including dimensions here- http://www.hispeccalipers.co.uk//svaultralite.html
[Edited on 2/1/21 by IanmK]