Folks, How difficult would it be adapting an SS dash to a plain old 70 Malibu. I have a line on a beautiful 'grandma' Malibu that looks like it is going to be the baseline for the 70 Clone that I have been dreaming of building. The interior is an almost perfect white with a bench. The only thing that I would like todo to the interior is to adapt an M21 for the power glide and to replace the dash with an SS dash. Is the dash just a plain drop in dash that will connect to the stock wiring except for maybe the tach? Or will I need a whole new wiring harness. The motor would either be a 'turn key' ZZ4, or a crate 502. BUt I am leaning towards the ZZ4 as I can still get the AC to work with the pump on the ZZ4.
Thanks in advanced for any advice, John from CT.

