need some help with gauges

[Glauco]

ok, so I found this set of porsche meters, first of all, does anyone know what year it is?
and second of all, if I buy these meters, what else do I need to link them to the motor? otherwise I need to be looking for that too...
I know it sounds like a dumb question, but I know absolutely nothing about gauges to be honest 
glauco

[ian c]

look like 60's 912 to me .
take a pic of back of rpm and mph guages

[Fastbrit]

From the design of the temp gauge and the lettering on the tachometer, they are one-year-only 1967 gauges from a 912.
VDO gauges almost always have a date stamp on the back, to confirm.

[ian c]

thats why youre a legend , and i'm just a mere mortal !!