The length of the transmission mount's round pipe which was cut out...that's horizontally, not vertically, if that's what you thought. The pipe was too long to fit (horizontally) inside the engine bearer....so I shortened it, but that does not affected height at all; as a matter of fact the new (appropriate) transmission mount has the transmission stand slightly higher than the old (incorrect mount) which was previously in my car. That's something I noticed right away, even though the old mount which I took out was in perfect condition.

With the new bilsteins, my 240D stands actually 15mm higher than with the old ones on all four wheels, measured at the highest point at the outside of the wheel wells, so that translates now in the springs unloading more than they did earlier.
All of the three mounts which I have newly installed lift the engine higher than the old mounts for sure...as the front right mount was badly damaged and compressed and the new (correct) transmission mount adds more height than did the old incorrect one. Therefore, it should be all good.

Is this what you were pointing at, or have I misunderstood what you meant to convey? If so, I'd appreciate your explaining your point better.

__________________
1979 240D, W123, 105K miles, stick, white w/ tan interior.