Has anyone attempted to fit these to an S3 Spider (RHD conversion). Ap Tilton Willwood product mounts too close to driver and quite high - OBP have some track pro units that mount well back and use the firewall for support. Nothing listed for Alfa but that's not to say something may well fit. Chassis stiffener prohibits retro install of floor mount Alfa product. Perusic have a neat system that runs up the firewall as well but very expensive ($3k+).