I am making an assumption that a 2.5 lightly modified Duratec, with around 220bhp and 200ft/lbs would be considerably less than a Cosworth? But if the prices are the same, then, yes buy a Cosworth crate engine.
Frankly, I just like the idea of getting rid of the leaf springs, if nothing else, air suspension could also be fitted if kitchen stoves were to be carried on the rack, or on 4 seaters.
