Seat hole positioning

[Josh]

I am using Triton race seats mounted on Rover Metro seat runners. These are mounted to 3x40mm strips welded across the chassis between the outer rails and the TT rails. My holes are located 215mm and 545mm forwards from the front face of BR12.

This arrangement allows my seats to go as far back as the chassis allows and forwards into a 'nose-on-windscreen' driving position. As jps says though you should ideally have the seats if you want to be 100% certain.