So one of the issues with the laid back seats in the GT40 is there is a very real risk if you crash of “submarining”, basically going under the bottom of the belt and ending up in a broken heap in the footwell. Now crashing in a kit car (or any vehicle for that matter) is not advisable at the best of times but there is no point in making thinks riskier than they need to be. Now having a “slope” on the seat front should help prevent submarining but the real way is with 5 or 6 point harnesses.

So it was a choice between 5 and 6 point harnesses and frankly the centre strap in the 5-point didn’t sound comfortable so it was a 6-point harness. The only issue was fitting it. Shoulder and lap fitments were fine, the chassis came with those already.

I read up on all the fitting instructions and frankly there just wasn’t anywhere *to* fit the anti-submarine straps *to*. The seat is so low to the floor that there wasn’t enough room for the classic re-enforced patch + eyelets and besides it’s aluminium so not considered strong enough.

A lot of thought later and googling many designs, with IIRC some inspiration from the Porsche GT3RS and I came up with this massive amount of overkill.

The belts drop through a hole in the seat and loop round the bars.

There is *just* enough room to feed the belt through between the bars and the floor.

So the end result is somewhat like this (rough bits of foam in the seat pan just to make it slightly more like a seat)

Obviously there is some rubber edging round the edges to prevent the belts chafing.