Paul,

a) What happened to the "other" calipers you were going to use. Ive seen those ones used on a Saff but not a RST.
and
b) Not saying this is the case above. But a lot of people "modify" the caliper by grinding part of the mounting bracket away on the caliper itself. Just something to be aware of.

By FAR the 4x4 calipers and 2wd (283mm discs) is the easiest conversion. Its all just bolt on stuff. Ive also heard that with the 4pots the pedal travel can get longer if you stay with the standard Master cylinder. Sure thats an easy enough fix though.

Oh and Happy New Year mate.

To anybody else.

Did Hi Spec ever sort out those issues with the bell to disc retaining bolts???