Is this Arnage T REALLY the 500BHP model?

[alexwagner]

This Arnage T is advertised as the 500BHP model:
http://www.pistonheads.com/sales/3581338.htm

Yet I see from the gear lever that it is the 4-speed, whilst the 500BHP model is a 6-speed. Is it an advertising error or am I missing something here?

Thanks,

[dazzalse]

2007 model year cars with the six speed gearbox were the 500bhp cars this is a 450 bhp Arnage T as it has the 4 speed box