kaiowas wrote:Another disc option for the mk1 which might be worth looking into is that fitted to the 2002-07 Corolla T Sport. It's a 275x25 disc but most importantly it's already 4x100 so assuming there's no clearance issues it's potentially an off the shelf part which would require no further modification. Part number on Brakesint is "BDS5937" if you fancy having a look to see whether it may be useable.
I had some of these to try (early on in the AW11 kit development) but didn't use them as they have a 55.15mm bore.