Does the z-bar need to be installed at the same time you set the engine into the car and stab the transmission already in the car? Is there room to get the z-bar back in there after the engine with cast iron manifolds is in? Any useful tricks to accomplish the installation? I found remnants of a felt washer on one of the z-bar studs so I assume I need a felt washer on both ends of the z-bar. What is a good lubricant to apply to the pvc bushing in each end?