you can fit 266mm 206 gti discs and calipers behind standard vtr rims.
you can go bigger if you want but you will need vts rims or 15" alloys.
206 gti 180 discs are 283mm and have bigger calipers (i have these and they are mint lol)
306 gti-6 discs are 283mm and have similar but different calipers to the 206 gti 180, these will also fit.
i have herd that any new pug over 1.6 has the same style and size calipers than the 206 gti 180 and the 306 gti-6, these will also fit the sax without and mods and will fit with 283mm discs.
406 v6 coupe calipers just fit the 15" rim with 283mm discs, the 406 discs are too big for the saxo lol
i have herd of some peeps having to grind back a bit of the 306 gti-6 calipers to fit on the saxo, i had no probs at all with the 206 gti 180 calipers, went straight on
the calipers to go for are willwood 4 pots matey, most should fit from any car, all you will need is a mounting bracket for a saxo from willwood them selves
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R.I.P SCOTTY, YOU WILL BE MISSED BY SO MANY. TAKE IT EASY UP THERE, UNTIL WE MEET AGAIN.
THERE WILL ALWAYS BE A SPARE SEAT FOR YOU TO RIDE SHOTGUN AROUND THE TRACK WITH ME IN THE 'PIECE OF SHIT SAXO' LMBO IT AINT NO BEEMER OR GOLF, BUT IT WILL BE FAST A FOOK, I PROMISE