I may have found a transmission for replacement but it has been pulled out of an e28, the seller has told me that it should fit the e34 however I want to be sure. the serial number 31043401477, I tried searching this on realoem bmw partys thingy but got no result can anyone help me and it doesn't appear to not be an electronic box as mine is, any problems here I assume the elsectronic only deals with the sports mode economy and the like if anyone could help me out it would be greatlt appreciated