Rear Roll Centre Adjustment Kit, anyone have any experience with these kits ?

HARDRACE GLOBAL

GTO and 3000GT Rear Roll Centre Adjust Kit - £171.81 : Evil Empire Performance, GTO 3000 Shop

best price:
Top Speed Mitsubishi 3000gt Dodge Stealth GTO AWD Rear Lower Arm Repair Kit | eBay

The Ultimate Handling Guide Part V: The One Unforgivable Sin, Overlowering Your Car

Thats excellent. to bad they dont have a RCA kit for the front as well.

I have one of those kits but it's sitting on the shelf. It will go in when I do a rear subframe restoration which will probably be awhile.

I instead raised the subframe.

explain?

Think this: http://cdn.splparts.com/tech/SPLSSBS13C.pdf

What about the drive shaft angle?

Angles already suck ass with a 1 piece, 1/4" really isn't changing anything. In the front it requires modding the rear engine mount but its stupid easy when you have solids.