ok do we have any real spotters on here my problem is this i have what i...

ok. do we have any real 'spotters' on here? my problem is this... i have what i believe is a ZXR750H1. my vin is ZX750H01..... so i believe it IS an H1. the problem i have is that on my old '89 H1 the swingarm was a 'box section' and on this one it looks like its off an older model i think? the rear tyre is also 180 section and i think it should be 170...?

Can anyone help...?