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Old 02-07-2013, 08:16 AM
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1966 Mustang Unibody Straightening

I've owned this car for almost 20 years now. About 10 years ago I pulled it off the road to replace the gas tank as I was tired of cleaning the fuel filter 2 miles down the road from the gas station.

I pulled the tank, saw the rotten frame rails and decided to replace them. While replacing those one at a time I realized I should replace the trunk floor. I replaced the rear frame rail but only re aligned them to the Sam place on the tread trunk floor. Once I tried to get the trunk floor sides back in I saw that the original frame rails, trunk floor was torqued. Nothing lined up as expected.

It really should have been put on a frame rack before I started cutting and welding. After further investigation, it looks as if it was T Boned at one point and reassembled to be cosmetically correct.

Is it too late to have it straightened? Not sure if its worth the expense. While I've owned it a long time, it's only a 6cyl coupe.

Ideas? Thoughts?

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Old 02-07-2013, 08:30 AM
Brian Martin,Freelance adviser
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You need to take it to a shop to have them look at it. Non of this makes much sense. If you are working in the trunk floor being "T boned" isn't going to affect it a whole lot, not unless it was hit at 80 by a truck, and in that case the car would have never seen the light of day. If you have welded stuff in crooked, that can't be fixed by a frame rack, you are back to removing those parts and reinstalling them straight.

Unibodies don't generally twist up like a full framed car when hit.

I am thinking your problem lies with the aftermarket parts not fitting correctly and that is all there is to it. Not cross measuring when installing them, not correcting the poor fit.

What gives you the idea that it is anything like being hit in the side (T boned)? Can you post some photos showing the whole area and then some cross measurements?

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Old 02-08-2013, 05:14 PM
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Is everything all welded up ???usually what I do is completely assemble the car with drill screws ,If theres a problem with gaps or something I just unscrew and move things where they need to be..once its welded its kinda too late but you can always cut the welds and start over...If it all worked before you can get it all to work again.....show some pics it dont sound to bad...
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