well, you really want the trans to be able to tilt some on the jack, as you'll have the back of the engine tilted downward to disconnect things and when you part the trans from it. Even though the scissors jack doesn't have a "tilt" feature, it will tilt a little, just due to the weight of the trans. Still, the tilt feature looks like a plus. Yet, the scissors jack has the raise/lower controlled by a ratchet drive, which is much more controllable than a hydraulic floor jack.

In theory, these seem like must-have tools for this job. However, I've found that the jack itself requires a lot of extra height, so the car needs to be lifted WAY up if the trans is attached to the jack and then rolled under. Thus, I've resorted to balancing the trans on a floor jack with a piece of 3/4" plywood between the jack and oil pan. When the jack comes all the way down, I put wood blocks under each end, pull out the jack, pull out the blocks one by one, until the trans rests on a sheet of cardboard, then pull it out behind the removed left front tire. Reverse to install.

__________________
'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.