If your forks are the S or SE model, you can use the Nissan Gold calipers from Honda CBR 900, 929, 954 or RC51. The brembos you got would require you to make a custom adapter plates. If you had gotten the Brembo calipers with the 40 mm bolt spacing, there are adapters plate for it already in the market.
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Ducati 996
Honda MC28
RS chassis w/ CR80
76 Honda Z50