Well, assuming you were prepared to adjust some of the mounting points...
This amazing bit of technology - http://www.totalcontrolproducts.com/rearcoil.html - is probably the most extraordinary live-axle design ever made I rather think. Admittedly, it's designed explicitly for classic Mustangs '64-'73, but you'll soon see that it's a self-contained subframe affair - and in theory (like a classic self-contained Jag rear end) could be adapted for any live axle environment.
I know this post doesn't directly address your original question ED, but it's interesting to see how many people over the years have tried to fix the inherent short-comings of a live-axle rear suspension. The setup I've linked you to is the best I've personally ever seen.
Made by Griggs Racing. My recent research indicates that these people are EXTREMELY highly regarded in the American Iron road racing categories.
It seems that issues such as front roll center vs rear roll center are very important when you start making modifications to a live rear axle's suspension. If your rear roll center ends up lower than your front's, it seems this is a VERY BAD THING. I'd recommend doing all the research you can. Don't rush in.