rear 3 pointer seat belt alternative

[christofy]

Hi all

Just got myself another t3 and have ripped out camping interior and re fitted factory full width caravelle r&r bed, the problem is the seat came with lap belts and I need the two end to be 3 pointers for the kids. I have had a look for new ones but does anyone know of a cheaper alternative that will fit from another vehicle etc

Any ideas much appreciated, would buy new but on a budget after getting bus


Chris