96 RIV Steering Rack Replacement

Can anyone tell me if it is possible to remove and replace steering rack and rear transmission mount in 96 Riviera without dropping rear of cradle?

I plan to raise front of vehicle and support with jackstands on either side of cradle, remove front wheels and disconnect tie rod ends, while supporting transmission with floor jack and heavy wood scrap.

Then I will drop exhaust from rear of engine, raise transmission just enough to remove rear transmission mount cross bolt, mount (and bracket from side of transmission if necessary). At that point I believe I can unbolt rack, remove fluid connections, loosen steering shaft coupling, and remove rack through opening above cradle on driver's side.

Has anybody tried this to suggest that it can be done this way? I don't really see how I could lower rear of cradle (or any of cradle for that matter) with my equipment which is limited to 2 floor jacks, 4 jackstands, and 2 x 8 scraps to spread transmission/engine weight to jack.

Also has anyone had satisfactory experience with rear transmission mounts now available from Advance, RockAuto, etc. that are vastly cheaper than the GM flavor? I'd prefer not to try to "fill" the rubber mount with any kind of silicone, etc.

Thanks in advance!

Just sitting here fat & comfortable and in my minds eye, I dont see how its possible without at least loosening the cradle.
whatever you do take a detailed pictorial for the rest of us
And having been down there,but I cant tell you with absolute certainty,The motor will not go anywhere if you just remove the rear mount.you will have to remove it to even budge the rack. and its such a bitch to remove by way of loosened cradle bolts that...you get the picture

I've been in that area a few times so I really should know but I'm not too sure. I'm kinda thinking that while it'd be tricky to get some of the bolts and whatnot, it can be done.
As for that rear mount, I have one brand new anchor that I mostly filled already with the 3M I ended up not using because I went further with the HP mounts. As is, I'd say they're tougher than the OEM but I can't speak for their longevity other than to say they don't have a very tall bar to beat. The stockers suck