So, to bring closure to my 5 speed swap, here's what happened..... In late December, I took my recently purchased 5 speed gearbox of unknown condition to KBL Transmission in Midway City, CA (Orange County) for rebuilding prior to having it installed in my '71 Z. The folks at KBL were friendly, knowledgeable, and fast. The trans was ready for pick-up three days later. I brought it back to the desert and gave it to my mechanic who then removed the old 4 speed and installed the new 5 speed and a few other things while everything was apart. On the drive home from his shop, I noticed that the transmission popped out of 2nd gear when decelerating. Bummer! I got home and called KBL who said to bring it in and they'd take care of it. Since they are about 100 miles from where I live, I told them I'd have to wait until my Easter vacation. No problem. On Easter break I removed my center console, detached the rubber shift boot, and drove the Z to my in-laws house which is just a few miles from KBL. As I neared my destination, transmission fluid started spewing from the area around the shifter boot and spraying the interior of the car. I limped it to the in-laws and had it towed to KBL the next morning. The folks at KBL said the drive shaft had taken out the rear trans seal and recommended shaft replacement. They reworked the trans internals and replaced the seal while a replacement for the drive shaft was being readied. The trans continued to pop out of 2nd. After pulling the trans several times to adjust and replace parts, they finally put all the internals in a new case and it worked perfectly. They delivered the Z to the in-laws house a few weeks ago and I finally picked it up yesterday. The only charge was a very reasonable one for the rebuilt drive shaft. I highly recommend KBL if you need transmission repairs or a rebuild. They stand behind their work and aren't satisfied until the customer is. Their phone # is 714.698.1466. Ask for Don. After dealing with my car, they may never want to work on another Z, but give them a try, anyway. Dennis