If you are talking about a Westy, Helmut has an excellent tech article on
adding shoulder belts on his Westy. The article is at:

http://volksweb.relitech.com/helmut/RearSeatBelt/RSFB_001.HTM

TomC
tcarrington@relitech.com
http://volksweb.relitech.com
85 Vanagon Crew Cab
82 Westy diesel=>gas conversion
65 Notchback

> Anyway, have you considered changing the outboard seats to shoulder belts?
> I have heard in the list that the hard mounting points are there, and it
> can
> be safely done.  It might not be really necessary for the infant seat, but
> when your child passes the 40 pound weight limit of the five point harness
> of a booster seat, he will have to start using the three point vehicle
> belt
> anyway.  Therefore, it might be a worthy investment.
>