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converting from 4 to 5 speed 260

Posted: Sun Apr 02, 2017 8:15 am
by 528iE12
Hello. what other parts than a gearbox do i need to convert from 4 speed manual to 5 speed getrag 260 on a 1975 525? and how to put in speedo drive? Different driveshafts on 4 and 5 speed?