1. Seat belts..
2. Speedometer doesn't work..
3. Tachometer...
4. Stereo..
5. cup holder counsel
1. XV 3 point retractable
2 and 3. Send your gauges to redlinegaugeworks.com - they do a great job, will fix your speedo and restore the other guages, clean up your lens, and can install a factory looking tach in your standard gauge cluster (see below).
4. If your dash was not cut, you can find an original radio and have it rebuilt with bluetooth, etc. Ward is a very good shop (
http://www.wardsclassiccarradiorepair.com/index.html0. If you dash is cut there are many aftermarket stereos that look good and fit.
5. Do not install a console. The pistol grip looks awesome just by itself, and consoles just clutter it up, rattle and vibrate.