Ive towed 4900 pounds with a 2.3 EcoBoost. It might as well been towing farts cause that little engine didn't care. Yea, 4900 pounds aint alot in big truck terms but a 4 cylinder from days past could not have done that. A 3.7 ecoboost can tow 10,000 pounds without missing a beat. So your 460 can do it... your 460 sucks ass. It truly does. Its a big slow iron peice of crap that makes no power, its true.. Its nostalgic but meaningless. Modern tech beats old iron every day. And as far as your theory of longevity, dohc vvt di turbo engines have been running for 250,000+ miles and more without a rebuilds. I love old shit but bottom line, your talking steam engines vs nuclear power when you think 70s tech is the way to go...