Sence i'd already tore into the trunk floor pan's and i'm still not sold on the fact that the frame rail's might be bent, i decided to rip the rear end and lief spring's from my 65 Stang donar and make a tool to check my frame rail alignment on the 64. So i jacked up the 65 and started to Try and remove the lief spring bolt's. A blue wrench was needed on the rear's and i got the nut's off the front, But the bolt had siezed to the metal sleeve in the bushing. So i cut the rubber out of the way and used a 4 inch cut off wheel on my angle grinder and cut 1/2 way through the sleeve and the bolt. Turned the bolt and done the other half. now the lief spring is out, Can't say much for the bolt, sleeve and bushing that's still in the spring. Then i took a 3 inch square tube and drilled a hole through it and added a 1/2 flat washer to one side to shim it up and welded another long 1 inch square thick wall pipe to it and lay'd it out the back of the car and bent it to match the frame rail, and out the back to the rear lief spring hanger. Then i welded tab's to the 1 inch pipe to touch the frame and some that will slide down the sides of the frame. I also made an attachment to the back on the end to help me align the tail light panel. And i got tired of holding my arm's up to work under it so i made a 22 inch tall boy creeper. I hope the pictures tell the story and the tool doe's align with the frame on the 64.