Today is a beautiful 62 ° Fall Day so I spent some time in the garage. I took the battery from my old Ranger P/U & put it in the Mustang so I could see if the engine turns over. Hooked it up & tried it the starter just spins. Jacked up the car & checked the starter & it seems when I installed the starter, I did not fully tighten the bolts. I tightened the bolts & retried it & the engine cranks over. Now I need to get some gas & try to see if it will start up.