JK Seats and fitting 5/6 point belts

[philfingers]

Just picked up a nice pair of seats but need a idea of where to put the holes for 5/6 point
belts. Seats have the base mounting moulding too so that area will need cutting out
Current seats have the 6 point strap running over the top of the seat which is wrong
anyway, tho it feels snug and secure
Am I right in thinking that the groin strap should be 10-20 degrees inlined forwards
to the vertical. How does everyone else mount theirs to the std alloy floor? I was thinking
pop riveting in some steel or stainless plate from underneath to spread the load
I have tried contacting JK but as yet no reply, when I have use of a phone, I will try calling them

[RedStar]