undertaker

Hi all, just signed up, although I have had several bikes over the years, I have just recently acquired a 1984 XJ750 F (I think,see below) needs a bit of tidying but in pretty good nick for a 28yr old, got no paper work with it so flying a bit blind as regards exactly what it is, will post a photo if I can so you can see and maybe someone out there can put me straight, came with no pads front or rear so trying to work out what fits it, any help would be appreciated. P.S this is not my bike but a picture of one exactly like it.