Today, I have received some Lap Belts. They came from ISP West in California. http://www.vwispwest.com/home.php?xid=4aabf739c158d92c67e86de6d53ecc14
I already have 1 lap Belt in the middle so I used the same bolt for the new belts.
I just had to drill a new one on each side.
Bit of silicon to waterproof the holes