Re: Which seat belt and why?
In a GT40 the seats are at a shallow angle and the bases are at floor level so there is a tendency to "submarine" out of 4 point harnesses. So a 5 or 6 point harness is a good idea. Provided they meet the relevant specs for the intended purpose then it is a question of suitable mounting points and comfort. Many GT40 replicas use a stout metal bar bolted in above the seat backs just below the rear window and the straps loop around this. I use Luke 6 point harnesses which cost around £250 a couple of years ago and which are both comfortable in use and have the date certificate sewn in. I cross over the two crotch strap under the seat pad to help with "comfort" in that area!