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Originally Posted by joecoupe

the Cosworth is a 2.0. so the heads will not swap out. and the flow rate of the volvo head it not that great and alot of work.

I think the size depends on which cosworth is being referred. The Sierra in this magazine I have came with a 2.5 L and I think the Sierra Escorts had the 2.0. However it could be a year thing instead of model.

I agree about the Volvo head swap. Seems you can have the stock head worked and make more power than with the Volvo swap.