Nothing wrong with the 4.6, it can make insane power. But if you don't want to turn a wrench as far, the 5.0 will make more with less. Still a few friends with turbo 2v 4.6's the coyote's just can't fuck with. Helps they weigh 1,000lbs less than the new coyote dreadnaughts, LOL. But the look they get when a 2v stomps on their dicks, LOL. Much butt-hurt and ego-deflation. Somebody always has more bigger/better/faster/money under the hood, ya never know when that turbo volvo wagon is really a sleeper baiting you to your doom and embarrassment. Anything can be fast for the right price. If you 5.0 swap, do it because you love turning a wrench, not because it has "potential". All swaps/builds are financial blackholes. If you buy a Mustang and decide to modify, you just entered the money pit. When I had mine, I swooned for the 'yote too, all that power and it could still get mid-high 20's fuel economy, lol. Ultimately, I saved shit tons of money sticking with the pit I already had my money thrown into and lived just fine without the 5.0 at 420-480whp (91 or e85/9psi) never once broke a sweat over the stock rods... because I had coyote rods ready to go in just in case. Do what you enjoy with your car, but if you're chasing power, E/T's, or lap times, all builds/swaps are headaches/money pits. Just make sure it's the one you want.