Picked up a narrowed 9 inch for my 95 formula. Its narrowed 3 inches on each side. It has a torque arm braket but no torque arm. I got everything to put it together but, now I need a drive shaft, torque arm, and the correct back spacing on the rims. I would like to get a nice deep dish alumimum rim like a weld pro star or something.... My question is does anyone know what the correct backspacing is to get the fattest tire I can under the car and where do I get the torque arm? Also, does anyone know the correct length of the drive shaft and what kind should I get?