hi saw this on ebay 200 mph speeo no tack or clock non gage i think the ebay number 7983857181 what do you think

Seems fishy to me. Could it be a Km per hour speedo? GM did ship the cars out of the country. The build date of August 63 on the housing would put it in the 64 model year, no? Aren't the Z16 speedos 160 or 180 mph speedos?

i think its in km as well z16 160mph