Fitting lap belts in 1982 van

[Coupey]

I'm all confused about fitting rear lap belts. I've tried the site search facility but tend to find posts about fitting 3 point ones.

I just want to fit 2x basic lap belts for use with my rock and roll seat in the back of my 1982 T3. I don't think there are any fixing points in the bulkhead. There are a few holes in the bulkhead but I think these used to hold in an old seat.

Can someone give me a very basic guide as to what I need to do please?

[multisi]

If you have a van with factory recessed windows then all the belt fixing points will be there. There will be 2 pairs of threaded bolt holes behind the seat about 2 foot apart, the other bolt fixing points are in the vans side panels.