I towed a pretty heavy, old 22 ½ ft Sleekcraft jet boat for years with a 69 El Camino. Mine had a fairly mild 454 with 350 turbo automatic. The real key for this package is limited slip differential and possibly some rear end wheel weight. My Camino did not make a real good tow/launch vehicle until I converted to limited slip rear end. I also did some pretty minor suspension mods to firm everything up and ended up with a great tow vehicle. In stock form, I would be cautious where I launced and take care of steep and slippery ramps.