Its not a cossie - its a replica. It says so in the ad. Fords never made a non-turbo sierra cosworth.

Looks quite a nice conversion though - got the 24v rev counter and 170 mph speedo. Still not sure its worth £2500 though.

The engine is a 24v cosworth engine from a granada cosworth. 195bhp and 200 lbft torque. Good engines but not tunable at all as you'll struggle to see 220 brake out of it.