Wheels89

I am looking at buying a 1988 Defender truck and want to import to US . Does anybody know if double fuel tanks in the truck is standard or if this was added after market There is a tank under passenger seat that's not hooked up and a new one that was installed in the rear They both have fill caps on passenger side of bed one in back and on near cab . Owner does not if its standard . Does any one know if this is level to import to US or is this a Safety Violation ? Thank you.