The worst thing you can do to that car is leave it parked in the garage. Get it out and drive it. Don't worry about the head. Your more likely to get rammed from the rear end than it blowing on you. Heck if you haven't rebuilt the engine and it's got 370K on it, it's made it this far, might as well keep driving it. Now, I understand that it's a liability to drive in NJ. That's life and that's how it goes.

Relax and enjoy the drive. You'll do more for yourself by doing this everyday.