I have a 1990 L sedan (1st gen) with the manual A/C controls (all knobs and switches). I've found a 1988 LS coupe at a friendly wrecker place, which has the automatic climate control (where you set the temp with a big knob, an LCD shows you the temperature, and there's a small plastic door covering the rest of the buttons (except for OFF and the Fresh/Recirculated Air buttons which are outside). My question is, and I'm sure it's raised often in the Legend discussions: can I replace my regular HVAC controls with this better/fancier system? How difficult is it? What would have to be replaced on my car? Is the auto-climate control regulated by the ECU, does it have its own computer in the panel, do the connectors match up, do I need to install a temperature probe? What needs to be taken from the donor car? Thanks for any advice you can offer.