extra seat for 100 series cruiser

[lars]

G'day all. Bought a base model cruiser at the Govt. auction, knowing it was a 6 seater but thinking I'd just buy a seat from Toyota & bolt it in the back & I'll be right ( I've got 4 kids & the sixth seat is pretty tiny between the the two front seats ). As it turns out the base model chassey is different from the upmarket models ( which have the extra seats ) & so you cant just bolt a seat in ( who'd have thought ?!? ). Has anyone had any experience with fitting a seat in the back ? Any thoughts/ideas would be most appreciated. cheers LARS