Thanks Andy. - Do you know anything about the Alfa ones? I'm sure I've read that the 156 disc is a good fit without shims on an R (they're a 4x98 with a 58.5mm centre bore), but now that I look at it, these Brembos come with discs with 5 holes in them... because they're for a '75 which is 5x98
Just because the discs can be made to fit doesn't mean the calipers are of any use.
I'm not sure about those Wilwooods; I'll keep watching them and maybe put a bid in. At that kind of money it's cheaper than buying replacement Nissan ones, but they might go up and up... there's no mounting for them, they're missing at least one shim, I don't think my braided lines will go into that fitting on the back; which could all make them more trouble than they're worth.
Thanks again for clearing that up for me; I just couldn't understand why you get no fitment list from anyone for that caliper. :doh: