Not my first car but my second one is still with me. 78 Trans Am bought in 82'. As per the OP, I would think seriously about modding the car too much. I modded my 69 Bee because there was no data plate or build sheet. Your car is a pretty rare car but it is yours to do as you please.
67 Barracuda FB
69 Superbee
"Southern Maryland: If you want a good looking woman, you had better bring her with you"