> In addition, we are installing Avenger rear springs (their
>higher rate will also keep the rear from diving down so hard),


What a novel idea ;-)

As far as suspension bushings go, Energy Suspension makes a "master set" that includes urethane bushings for every single rubber bushing on the car (and some that aren't!). If you've got a press and a weekend, you can go that route, but you'll hate me for suggesting it. I helped install a set once, it's absolutely no fun.

Prothane makes urethane inserts for the front&rear (no need for the front, or the rear if you've already got it stuffed with an insert) but they also make a set of press-in side MM bushings that i imagine are quite nice.

I think that with a solid front MM, the biggest roll issue becomes the rear MM bracket - it tends to have more flex in it than the insert-packed rear mount. I have broken two of them since i've had my car. If you make a better one, i'll take one :thumbsup