Just went through this on my '85 528e with 216k miles on original slushbox. Was quoted $2400 in Tucson. Am working on conversion to 5-speed when I find a good one. The car has been great and, as the original Owner, I know where it's been, so it's worth fixing to me. Chas '83 633CSi '85 528e '86 325e '88 735i '94 525i BMWCCA 44835