I've been hanging onto an '89 Impulse 5-speed since about November of '12. This Impulse had only 67k on the odometer, too. Andy and I found it the day before the Memphis meet last year.
I thought I had a photo of the odometer, but I can't seem to find that one. I'll post it if I find it.
I didn't pull the transmission until November--and then the car got crushed in less than a week. I was not going to sell it, but I'm reconsidering. I certainly do NOT want to ship it, but if someone wanted to pick it up at the meet, I'd be willing to sell it for $300. I also have an "upgrade" slip yoke that I'd include for another $60.
My truck has the same transmission in it, and I do NOT recommend it for anyone but "flatlanders" who do some highway driving. If you putt around town and rarely go 55, this is not for you. I rarely get into 5th except when on the interstate highways. But if you have long commutes, at highway speeds, and if your motor is still strong enough to turn it, it makes 70 mph driving a lot more bearable.
Email if interested.
Jack