one issue, won't it look a bit odd? I like a bit of symmetry myself.
How about something like I did. I fixed it in the centre of the hoops on the body. I'm not sure of a RAM as space in the boot like a sumo but anyway...........
I made these brackets:
http://homepage.ntlworld.com/chedzoy/cobra/bracket2.JPG
they were then fitted in behind the seats like so:
http://homepage.ntlworld.com/chedzoy.../brackets3.JPG
(this picture is the original design before I beefed them up considerably)
Then fitted an eyelet at the top with a grommet like so:
http://homepage.ntlworld.com/chedzoy.../brackets4.JPG
this picture demonstrates my cock up, I have headrests which is not good with this design, but does show the way the strap fits on.
http://homepage.ntlworld.com/chedzoy/cobra/fcp/cob5.JPG
Next winter I plan to remove these 3 point harnesses and replace with 4 point with the anchor points either side of the head rest, but not just now.
hth
Graham