i been given a su carb today

but my mate cant remember what its come off

he thinks its off a 1275 mini, how do i know if its a hif 44? there is a metal tag on it with the numbers FZX1415 and 7WK289. if this is not the right one, there is a company on e-bay doing a refurbished one complete with adapter plate and set up for my samurai for £220, isthat a reasonable price?