Thanks MQ, unfortunately didn't get a good shot of the silver one, this does have brackets, it's higher up on the body. The rear bench seats hook onto it, it's the set up where you raise the seat part forward against the drivers seat, then unclip the bracket clip (you must love my descriptions) and the back of the seat tips forward and slots down behind the the seat you've just raised. meaning it's level from the back of the vehicle to the drivers seat.
With the mods I'm doing, going to need a cert anyway just working out what I want and/or can do.

Thanks for the tips on the fuel tank, will have a gander on Sunday.

Bolts are no longer an issue, have removed them, just have to wait a couple of weeks until the skin grows back LOL