There's no such thing....
There is 2 models of the 406 sri 1 has the 2litre 8v turbo engine 150 to 160 bhp in standard form, the other is a 2.2litre 16v non turbo it has around 160bhp. hope this info helps lol.Didnt think the sri had a turbo.
My sister had a 406 sri which definitely wasnt.