This maybe of no interest as its not a Ford but here goes.

Me and my best mate have bought a S1 Lotus Elise for a track Car, we did 3 track days with the Rover K Series engine with a massive 130 BHP and became very clear that we needed a little more power, so the decision has been mate to fit a 20v Audi Turbo engine mapped to 280BHP. In a 700 kg car it should do the trick

This is how we bought it, please ignore the Spoiler it will be removed.



We bought a hard top



Painted it



Actually I think it looked better silver

And then bought this



We have remove the seats



Then the rear clam



Got access to the hugely powerful k series



And removed it



And ended up with this