Kia carnival 2010

It MIGHT be able to be done but you will definitely need an engineers certificate to make it legal and safe as well.

Maybe talk to a company like Techsafe seating or one of its installers to see if they can provide a solution

Pretty sure you can't because of the 60/40 split in the folding seat. The seatbelt can slide into the gap so it can not be worn correctly. Newer models have different designs to suit.

Thanks for replies much appreciated.