Hi,
Was thinking to add my comment on this forum too to give you a clear explanation.
There are differences in Fireblade and Gull Arm.
Actually Fireblades starts with MC2211 and gullarm as MC2210 on 250rr models.
There is no different as both looks similar but you can point it out from the disk plates as gullarm having many holes in it and fireblade only having few holes compared to gullarm disks.
Further fiblades start production after 1996 till 2000 and gull arm till 1996 only.
Manufacturing year different from the registration year, there is no 250RR production been done after year 2000.
Compared to Gull Arm fire blade is the most popular series for race replica but only few bikes been produced and most successful series I would say.
Some people believe 110 chassis are gull arm and 115 chassis are fireblade, but I don't know the truth behind that and I believe it is not true.
Hope this is all you need to know about fireblades and gullarms