There are quite a few things that can be done with the trans installed.

I'll go with Sun Valley if a trans needs to come out and the car is good enough to keep. Sun Valley is cheap enough and my time is expensive enough that I don't want to do the swap twice - or go through the learning curve of building a trans.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.