Pay close attention! The eBay.de auctions mentioned are for a tranny that would not fit a 61X engine! The tranny pictured is from a 230 gas car and it's starter hump is on the driver's side of the engine!

Another possible issue with the various model of the 717.4XX transmission is the speedometer connection. Trannies depending on the original application could have either a mechanical speedo cable on the driver's side of the tailstock or they could have an electronic pickup on the passenger side of the tailstock. I've had a couple and 123 installations both OM61X.XXX and M110.XXX have a speedo cable and a 126 installation, an 84 280SE had an electronic speedo pickup. The latter was installed into an 85 SD!

Failure to observe these details could lead to either a costly mistake or one more system addaptation exercise! Good Luck!