I had a 97 32 ft Bounder with the 460 and towed my Toyota Corolla from Connecticut to Kalispell, Montana then down through Wyoming and Colorado. I had no problems. This is a very durable engine, but doesn't breath very well due to the intake and exhaust passages. As others have said, a Banks system will breath a lot of life into this, if you really feel the need and have an extra $3000 laying around. Otherwise, treat it gently and take your time. You'll get there. BTW, no more than every three years, have the whole brake system flushed and replaced with new fluid. Brake fluid is hydroscopic and absorbs water from the air. If enough water is in the brake fluid, it will boil when using the brakes hard and you will lose them.