I have a conversion van that has after market seating in it. My
problem is that the shoulder seat belts for the wall seats are
extremely uncomfortable.  They cut across the neck area and I'm
constantly having complaints from passengers that sit in the wall
seats.  I think what needs to change is the "Offset"  for the top
mount point. That's the piece that has the loop on it for the belt to
go through and also mounts to the wall on top.  This piece is long,
and brings the loop down around 8 inches lower from where the wall
mount is.  I think this is already the longest regularly available
offset, but I believe I need around 12 inches to get the belt onto the
shoulder rather than neck.

I haven't been able to find anything longer than 8 inch offsets from
after market, but then I haven't done anything more than a few web
searches either.  Anyone know if longer offsets are available?  If
not, is there any way to move the offset mount point down?  Welding
and cutting is still on the table here, but I'm not sure how I would
get that done and certified as safe.  As far as I'm concerned,
anything would be safer than them - even just lap belts.  I'm not sure
about the legality of replacing shoulder belts with lap belts
though.... might expose me to some liability issues.

Oh, btw the conversion manufacturer hasn't been helpful at all.

Thanks,
Dave