Simple wear and tear. This car was built in 1967. It is in amazing shape when I got it. The only costs I have put into this car have been to replace old parts.
Since owned, I rebuilt the front end, replaced the rear springs and shocks, rebulit the gear box, added Pontiac Rally rims with BF Goodrich Radial T/A's, put a 4 barrel Holley carburator and Edelbrock intake and dual exhaust with H-pipe, I have added gages, and I just finished ordering a TH 350 street and strip transmission, rebuilt the rear end with 3.55 gears and an Auburn posi-traction unit. I am going to take the 326 engine out and replace it with a 400 engine. After that, I will have a clean and strong street machine that will last me a lifetime!!!
Just like to say that I have just seen my first Tempest they look very sharp. Best of luck to you and your car.