Brooklin Models 1:43 Bristol 406 Diecast Model Car LDM90A The Bristol 406 which was introduced in 1957 had completely new styling which lacked the rounded looks of its predecessor. It was also the last Bristol to employ the well tried 6 cylinder engine, albeit in modified form, before American V8 power took over. The same basic body design with subtle modiciations would last right through to the 411.