its like a traction bar kit, but uses chain instead of the bar. ive put it togther but havent tried it out yet. i would think that it would work, guess i'll find out. heres some pics of my setup.
at least if it doesnt work out, i havent wasted but about 20 bucks. the coat-hanger wire midway is just a safety in case something breaks loose. didnt want to drill my front shackle mount so i used a clamp thats used in overhead applications in a factory to hold up water and electrical utilities. i could see the "bar" would use compression in reverse or during heavy braking, but i would think that during forward travel under load tension would be whats going on. i could be wrong, i havent studied up on this stuff. didnt preload my chain much, bout 1 turn with a wrench after hand tighting it up.