I havent read any of the thread but thought id give you my 2ps worth.

I use my XR3 on track (Hard abuse thrown all over the place) and on the road day to day, i use Konis with 25mm drop and esc cos wheels with 205/40 tyres. This has been the best setup for the way i drive and the car best handles.

In the past i have had so many different setups from a full 6 link adjustable rear end with rose joints fully tracked up to many settings. Using decent coilovers set at different heights and loads of other trick stuff like adjustable rear roll bar etc etc.

Also had std arms with coilovers, decent ones like billys and budget ones like GAZ again adjusted many different ways.

After all that i have gone back to konis all round with std rear arms.

The front has never changed in rollbar terms, i have always used the S1 rollbar/RS16i with some uprated tie bars, rose joints, TCA's rod ends etc.

Regards
Jano