Tecnique for Rear Sway bar

I have a 99 Carrera Coupe 6 speed. I've seen too many different techniques to replace the rear sway bar bushings, and/or end links, from 4 jack stands, ramps, etc. How is this supposed to be done? If it's done on ramps, how do you reach the shock tower bolt? Does the suspension have to be "loaded", on the ground, or compressed by floor jacks under the 2 points where the bar attaches to the rear axle?

Basically you want both sides either loaded or unloaded, but not one side jacked up. These endlinks have balljoints, not bushings, so it doesn't have to be tightened with the suspension loaded. This assumes stock suspension. If you have coilovers and are trying to corner balance or similar, you will want to avoid swaybar preoload, but thats done with adjustable endlinks anyway. Not sure what you mean by shock tower bolt or why you'd be messing with anything on the shock tower.

Stock suspension. Disregard "shock tower". So the suspension has to be level, on the ground, on ramps, or a jack placed under the stabilizer bar brackets, or the factory jack points for the frame, one of those 4 will work, is what I'm hearing. I asked because I can't recall what kind of car it was many years ago, when I removed the stabilizer bar bracket it was "loaded", and I had to take the load off to get the bolt/bracket back where it came from. The top of the end link is behind the (bathtub looking bracket) on the left where the shock runs through there negating any room to get a socket on it.

I think you may be overthinking it. Just get both rears off the ground and on jack stands. If I recall the top endlink nuts can be loosened with an open wrench.

Yup. Super straight forward. Lift the entire rear of the car off the ground. No preload on the anti-sway bars. Porsche is even nice enough to provide a hex portion not he ball joint of the link to hold while removing the nuts. 15 min job.