Esc cos big turbo camcovers are the same as those on a sierra mate
Motorsport shells were only available in white, no sunroof, no electrics (windows, heated screen, mirrors etc) no sealant and water injection.
The shell type can be checked by the vin tag.

A cosworth engine would last longer than 41k, but he wanted more power i pressume As you can't get 500+bhp from a standard engine