[m eeley]

I have a sierra based sumo, completed this year.

I didn't use the pilgrim seat belt anchorages, I positioned my own to suit the harnesses as per Willans installation spec.

However, as far as the pilgrim mountings go, from memory on my chassis (2002) the outer mounting for the lap belt was obvious (a lug) the inner mounting (on the tunnel) was positioned slightly lower but in a similar position.

These holes should be pre drilled. I don't remember there being any choice.