Had the 4.6 been as readily available then as when I first began accumulating parts for my project, plus what I know about them now, I for sure would have put one in my '31 Ford roadster. In my mind, as long as the oil is changed regularly, they seem to go on and on - I've had 3. Two 'birds and an F150. The '94 'bird had other drive line problems(tranny and diff), but the '97 was a sweet car that got 26-28 mpg at highway speeds (72 - 76mph). The 5.4 in my '01 pickup really wasn't as good an engine, but did an OK job, tho wasn't up to pulling my big camping trailer very well. Now, as Dave S says, a V10(which is in my new PU - a 3 valve version),now that's an engine, though I'd keep the injection. Unfortunately, with the V10, gas mileage........isn't!!!!