Need your advice: Installation in Colt CZC ? & FB + Display Connect with Alpine

Moin first of all to all motor talk users ! I am happy to have found in this forum, because here also really competent people can post, as I have read in other topics already. Besides, there are enough Mitsubishi crazy and I like that ! So once on my request: I decided to give my Colt CZ3 Invite D-ID 1.5 in payment to get me a new Colt CZC Invite 1.5 (full equipment) Now it comes to me that I 1. before 3 Woc This is not the problem either. Model Alpine cda-9855r. With Mitsubishi it is unfortunately so that you can no longer turn on the display (except with buttons) if you install another radio. What I find only a pity now is that the new Colt has a steering wheel remote control and I can no longer use it. Apart from that, the new radio may look like mp3 but dead ugly for my taste. ( As with the CZ3) Alpine offers solutions for where you can allegedly connect the radio with an adapter to the remote control of the car. I can only never find real information, because Alpine really doesn’t write much about it. Does someone know more? The second problem is that I don’t know where to build my system. Before I had a GTO-4000 power amplifier in the car and another 30cm sub of MacAudio I have sold these things now and need some new equipment. but for the car ….. —– —-> Where does one have space for a sub and a zb 2nd channel end stage in this car? And without it looks ugly? Maybe someone still has this problem and knows a solution for it. Besides, I don’t know yet how the sound of the factory boxes sounds. Besides, someone has suggestions for a sub and a power stage for a convertible? Additionally 3. has someone already made the vehicle display interface of Alpine run? Find nirgens supported car s and from the connections I won’t be smart…. Thanks for reading the long and also to the one who wrote an antorte. Greetings bl4ze