I'm unclear on what the options are for rebuilding the Koni's to be double adjustable. Where are/can the adjustments be made? Particularly the rear. Can the rebound and compression adjustments be made from below without any dis-assembly?

Team would be a good person to answer these questions.

Lee Grimes at Koni-NA would be able to answer them as well. If you want his e-mail or phone number, I have it and could pm it to you.

I'm unclear on what the options are for rebuilding the Koni's to be double adjustable. Where are/can the adjustments be made? Particularly the rear. Can the rebound and compression adjustments be made from below without any dis-assembly?

Rebound is on the top, compression on the side at the bottom. You will still have to pull the shock down to adjust rebound, you just wont have to pull the spring or remove it completely from the car.

Phil at Koni Truechoice Racing Services (http://www.truechoicekoniracingservices.com) is another good resource. Lee Grimes is a good guy, and I've had Koni NA do a couple DA conversion/revalves... but they've never supplied me with dyno plots when I've asked.
This year, Truechoice Koni gave me everything I asked for, with less than 1/2 the turnaround time.
Make yourself some remote adjusters which fit through the factory openings in the trunk. Saves a bunch of time when you want to change rebound.

-Ivan

May have some DAs for sale depending on how soon you're looking for them