There is no way to eliminate ALL bind with any sort of traction device. All that we can do is to minimize the bind. There are some very nice designs available that do a nice job, and depending on your usage there may be more then one choice. The drag race trucks do not need much articulation, so a traditional ladder bar could work fine, however the more versatile you want your truck, the better the traction device you need.
The TAD that we offer through Performance Unlimited is a Chromoly steel device that has brackets that will be welded to the axle housing, one each side of the cast iron center section. This device then meets in the middle of the truck, above the driveshaft. A crossmember will be added or modified depending on the individual trucks needs. With a single mount point, articulation bind is minimized. The first prototype is installed on a (gasp!) Ford F250, with a 500+ cid gasser, used as a mud bogger. This device made huge changes in the way the truck responds upon acceleration. The TAD weighs approx 42 lbs, depending on application, and the cost is $900-$1000 installed. This unit is custom built for each vehicle to maximize the efficiency.
Please feel free to contact me via email or call 6-10pm EST 802-885-5478
Rodney