I'm getting close to starting the frame on my '63 F-100 Unibody and I need an engine. Whereas a Chevy LS would be cheaper, I refuse to do it and I'm holding fast to putting a Ford in a Ford. But I need some help.

My dream engine would be a 5.4L DOHC V-8 from Ford Racing called the Terminator. Rated at 700hp and looking ultra-sexy, the modulator V-8 would be the perfect choice. One problem...I don't have $17K so I'm trying to figure out if a blown 4.6L DOHC out of a '03 Cobra would be ideal, or an older 4.6L DOHC with a 76 mm turbo strapped to it, or even a 5.4L SOHC with a blower from a Lightning could do the trick. I even heard of a good deal on a '05 4.6L 3-valve from a Mustang that I could add a blower to.
What do you think?