Conversation Between Wobbly Dave and Mrsmastiffs

Morning, can I pick your brains please regarding these damm abs/tracs ecu's ? Mine has been soldered twice by Mas and he is saying he won't do it again and that I need a new one. Mine has the number 9162675 on it & I cannot find an identical one anywhere. One has appeared on Ebay from an 850 T5 that had abs/tracs but its number is 9140773. If I buy is it compatible with my car ?
Sorry to be a pain but I need to get this sorted once and for all, especially if Mas is intending to sell the car plus MOT due in Jan :-(
Kind regards
Tracey