No seat maker publishes how far their head supports reach forward, so Cameron measured every shell in the showroom. Internal depth, external depth and width for 13 bucket seats, with diagrams showing why deep and shallow suit different drivers.

No seat maker publishes how far their head supports reach forward, so Cameron measured every shell in the showroom. Internal depth, external depth and width for 13 bucket seats, with diagrams showing why deep and shallow suit different drivers.

The original Sim-Lab P1X gives you two 40×40 rails and no seat bracket. Sim-Lab publishes a rail spacing for seven seats, four of them Sparco. Here is which seat fits, and the 290mm pattern that never changes.

Five genuine BRIDE seat rails for the Suzuki Alto Works HA36S, which rail suits which seat, and nine seats we stock for the car: three steel FIA, three fibreglass FIA, and three of BRIDE’s own shells.

Five small bucket seats picked for the MX-5 Mk4, the generation also called the ND, with the PCI fitting kit that carries all of them. Every seat is FIA approved and in stock.

A 6ft 4in owner asked which brackets and rails put a Recaro Pole Position into his 1995 993 Carrera 4 with maximum leg and head room. The exact stack we would build, and the honest sizing talk that goes with it.