It really depends how nice of a job u want. best way is to take the time and blow it apart , but thats after you test all gaps and running gear for fitment. Remember to drill pilot holes to make for easy and trouble free assembly. An extra day or two of prep goes a long way in final fit and finish.

Ok my car is a conv has been completely disassembled "been alkaline dipped and ecoated" so when you say completely assembled do you mean interior, side glass and in my case top? Or do you mean get it driving and test everything with just doors, conv top frame and a drivers seat?

No need to install glass, wiring and interior. What they are specifically talking about is suspension, wheels and tires, brakes, engine, trans and body. It is critical to get your doors, fenders, hood and related perfectly aligned before doing final body work.

Thanks that is what I thought.