All Ford guys know the proper formula for building a Fox-body car: take a Mustang and cram it full of injected V-8. That’s the mantra, the 11th commandment of the Mustang community. Fortunately, someone forgot to show that particular stone tablet to Bill Powell, owner of Powell Performance (714/992-4909). He did something very different when he built his Fox body: he built a Thunderbird, and he built it with a turbo-four.
