Hey, I think we all feel that way some times about our cars. I know I do and it's only been one year since I got my 67.
It is expensive and time consuming, a pain in the *** even....but, we sometimes forget what an amazing chance we all have to able to own and enjoy these beautiful cars! I've been waiting 15yrs just to get mine and now I have her, and you know what? It's going to be a hell of a ride!
I wouldn't trade her for nothing and for all the money & headaches I go through, all I need is to start her up and it all makes it worth while.....
So it will be ok, keep it up and I think we all hope you finish your project and we are all here to help. FYI, I have a 67 gt 390 S code. Over sized pistons, a nice aggressive cam, super 44's, drums all around. Pretty much stock. And imagine I easily doubled my budget when we started the repairs. So you know, F__k it! Who cares, I love my car and I'm gonna have fun this summer! You should too! Good luck.