Didn't have the lugs as its a 98 chassis. Spoke to Bruce at Arch he told me how to mount the straps. Drilled the mounting holes through the channels at the rear, then rivited ali bracing strips in the gauge he recommended between holes, then bolted through.
Each strap has its own two mounting points.
Having spoken to Steve at Tillet, he said that cutch straps should really be bolted just under where they come through the seat, so that in a rear end shunt, they would stop the driver going backwards out of the seat as well. But with the length of straps etc I couldn't see how to engineer that solution, even if they went through a sleeve under the seat hole, you wouldn't be able to adjust them.
I will give Bruce another call to check up, if I'm in any doubt I'll re-mount them doubling up on the side mounts
Edited by - Casbar on 1 May 2007 11:30:36