Here is my solution to the DTA S60, S80 and S100 mounting dilemma.
A pair of identical rectangular brackets which slip over the each end of the ECU, and accept a M5 or M6 hex socket cap bolts which allow the brackets to be solidly mounted to your vehicle, or in my case, through a set of four M6 female to male anti vibration mounts.
Price
£Free, feel free to download and print: https://www.thingiverse.com/thing:3191519