[MWYNETTE]

Hi, I am looking for a '55 frame for a customer's convertible and was wondering what if any the difference between it and the sedan is.

 

[PaPa Mike]

The convertible has added braces to strengthen and add stability for not having a top.

 

[chevman57]

The convertible has an X crossmember in the center of the frame for added strength..
Terry

 

[55fazzi]

PaPa Mike and chevman57 are correct. There is an X brace. This is criticle for structional integrity. If you have the skills and equipment you can fabricate one. Good luck with your search.

Tom

 

[MikeKy55]

The crossmember is available new from aftermarket companies.

This one, but check around as you might be able to save some $$$$$.

http://cliffsclassicchevrolet.com/page13.htm

 

[dseale4888]

There are also plates that attach on the bottom of the flanges of the frame rails.
Dave