Heat can expand the metal if it isn't localized and cooled quickly, if he has oil canning the metal has expanded to much and needs shrinking. If he expands the metal more he may get rid of the oil canning but will have a bulge in the door.
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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
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