[nvr2mny]

Geez, tough crowd. I'll chime in with what I've done to somewhat accomplish what octanemaestro is after. We rebuilt our '86 Carrera Targa with a backdate/update theme. For some reason when we reinstalled the motor, the CC became inop. Don't 'really' use it but will chase it down once we get it out of the shop tidying up the stereo install. It'd be nice to have, but not necessary for my style of driving. Honestly, never thought of the keyless entry upgrade, but now OP and some of the other posters have me re-evaluating that. We did Dynamat the heck out of the car since entire interior was out. We did the entire floors, doors and installed a new engine sound pad. Quieted down the interior "big league" to enjoy the sound system we had put in. NO regrets there. As also mentioned above the Kuehl Air System is AMAZING. A far cry above the anemic OEM system installed 31 years ago. Again, NO regrets their either. If the OP's location is indeed Brazil, well, I'd definitely do this prior to any other upgrade. We're finishing up a resto on an '82SC Targa (I love Targa's, I cannot lie) and the Kuehl Air will be installed in it too. Hope this somewhat helps. Post pics of your car and progress. Best of luck!