what year? as there are several changes in them for particular years....
for example
radio opening differences
68 lower dash pad mounting holes
70-up no key hole
67 glove box door mounting different than 68-up
and prob a few other things i cant think of..... hope this helps in your search.
If you are close enough I have a 67 and a 69 if you are willing to pull one.
Also as far as I recall 1967 is the only year that didn't use a thumbwheel radio.