No reverse is a problem with the b3 band and corresponding clutch, piston, etc. The trans has to come out and requires at least a partial rebuild to get to these parts. What are you expecting to hear/pay?

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth