Here are a few views of the coupe vs convertible.
Notice the hinge bracket is straighter and the torsion bars sit up against the Dutch panel in the coupe. As I’ve said, those torsion bars are a good 4 inches longer than the vert.
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Here is one outside of the car. Much rounder than the vert’s three piece unit. The dimensions around the base for the trunk and the wheel well lip are the same, so yes a good metal man could modify.
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Here is the vert by comparison.
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Hope that helps. Unless yours are completely rotten from top to bottom, I’d just repair where needed using pieces from the coupe. My 2 cents, your mileage may vary.