Sometimes a fear of heights can contribute to other fears, like aviophobia. Cognitive behavioral therapy (CBT) is sometimes helpful in treating cases of aviophobia. Aviophobia is a fear of flying.
Re: Increase towing capacity? Postby Z15 Â» Jul 01 2010, 5:59am. With that kind of weight you need to beef up the suspension big time. Air bags are not going to cut it, you need heavier springs, HD shocks, Load range E tires, bigger brakes.
3 Answers. 2 out of 2 people think this is helpful. Actually, with the manual trans, the 4.0 was rated up to 5,000 lbs towing capacity according to the original factory sales literature. 2 out of 2 people think this is helpful. My 1990 XJ with the 170HP 4.0 I6 and manual transmission had the 3.73 axle ratios and 31 inch tires.