Just get a 83-92 5.0 litre mustang ho motor 300 bhp to begin with a complete car including 5sp manual box will cost ya about 1800 quid. + 350 for shipping. Bolt on paxton supercharger 200 quid extra 150 bhp on top. Runs on normal fuel. If its too heavy bout 800 quid will get you Edelbrock 2.02 fuelie heads a matched intake and exhaust manifold and carb. 500bhp plus. Oh yeah and if thats not enough bolt on nitrous. As someone who built a couple of these although it was in the states, Its the cheapest most reliable horsepower you can buy. The technology may be old but whats the point in having a really cool claw hammer when you can just use a F0000000000king sledgehammer to do the job. I should have the above in my granada by the end of next year without having to sell one of the children to finance it or sticking my missus out on the corner!. I will see all of the atmo powered cossies, duratec, zetec, xe or whatever ya got next year at the track.
Ps, If Im wrong... How come I never seen any of the above engines in an NHRA drag car?