Instrument Cluster with Tach

There are a lot of differences between the '68-'69 and the '70-'73 dashes.

If you're looking for one with a tach it's a '70-'73

'68

'69

'70-'73

In all reality, the 510 tack is rare, and if you can find one  that actually works it will cost you the Big Big. There is a Revolution Gauge Tack sold through SpeedHut that fits in the dash and looks pretty close to stock. You can even open the gauge and put any face on you want.

They also make a speedo the same size and face that uses GPS and requires no cable 

Also try posting a WTB (want to buy) for the stock 70-73 cluster on the510realm.com. You never know.

I got an auto 68 cluster in good condition 

69 pic is a 68 dash as well.

68 and 69 look similar but are completely different 

even the mounting points for the cluster are different  

the first pic is a 68 dash 

second is a 69 

most noticeable difference is vertical heater controls and the added horizontal piece that holds ignition, choke and headlight and wiper switch 

the cluster has the switch description for each 

the 68 does not and the cluster mounts different