Actually the speedo and gauges are correct. The speedometer is specific to the gauge pack, on a normal instrument cluster with speedometer and fuel gauge there is one directional indicator on each. If you look closely at this one both directional indicators are on the speedometer.
Yea those are out of a bird. I've got the factory 8-Track in my 67 Camaro Conv, so to get some gauges, I installed a ralley pack out of a 68 Firebird w/160 MPH speedo into my Camaro. The guages work great. Unfortunatly I can't bury the speedo needle anymore