Join Date: Mar 2006
Location: Northern NY, USA
Dunno about the bolt hole, but the trip reset on the pod gauges is a cable looking thing with a small knob on it that sort of dangles under the dash. (it might be balled up in the wiring back there, as it's not very long and just clears the bottom of the dash)
I made a mount that puts it almost directly behind the key.
Turn it clockwise to reset the trip meter, counter clockwise to remove the knob.
While your toying around under the hood sometime, look on the left fenderwell back near the firewall and in the vicinity of the 2 relays that are mounted there.
If things are moderately well preserved, there will be a very small sticker (about 1/2" x 2") that tells the actual manufacture date of your car.
Your's is probably like mine: an 84 w/dual pod dash that got sold as an 85.