Autozone has a reman nv4500 from Midwest Transmission Center for a reasonable price. I can't find any info about MTC here, but I did call them and they say there NV4500's have the fully splined mainshaft.

The positives of this is that I have a local store to deal with with no shipping and core return shipping cost to absorb, and I'm getting really tired of haveing to double shift third!

Does anyone know anything about these guys?