It sounds like I would be taking a chance with the 6 cyl transmission. I have 2 of these, 1 known good one, and the other from my parts car. Both are 4 speed auto. I guess I'll see how low of a price I can get the 230 engine.

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1970 280S M130 engine- good runner
1971 250 M130 engine- #2 rod bearing, gone
1971 280SE (blown engine,parts car)
1977 German 280S W116-only 33 years old