I have sean it done to a 58/300d two time 1they made it a convetable [In hollywood Cal.], the other thy made the top unbolt [that car is in iran]. But those cars as coupe windows go against top. What do you plan
to do about windows closing. And yes you have to do frame work underneath, and at doors piller they will move if you donot. I still have a few pic,s if want will email.

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30 yr's still in love