They other slave cylinder doesn't look likes it bolts up. It has two bolts top and bottom but are off to the side, where as the one the transmission came with has two top and bottom, but are centered. And the exhaust bracket off of the newer transmission has two holes, but are too far apart and it doesn't fit on the studs.

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1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition