I flat tow my Jeep with the front bumper and the rated tow bar is held on with 4-3/8” bolts.I agree with @NskLJ. You could definitely make it strong enough to tow with especially for a TJ but it of course wouldn’t be rated. The welds and mounting system on my smittybilt bumper aren’t anything special and it’s rated at 500 tongue and 5000 trailer weight