Thanks mucho. I actually printed out the picture and counted the teeth from your web site!
I think I will get one from the local shop so if I have a fitment issue I can return it.
Your web site provided a wealth of info that should help me even though this is going on my 72 truck. I bought a number of bits from bowtie overdrives that should make most of the install a lot easier. You certainly had a lot of twists and turns in that tale.
What's the mileage like, ever check it?