[kenham]

I am new to this forum, would like some comments. I recently acquired a 57 Bird from the original owner. No rust, no dents, always garaged. I have the engine and interior out. I intend to take the frame out using a method I've used several times in the past with sedans, which is to remove the rear suspension, block the car on the sills wheelwell to wheelwell and roll the frame out through the front. I've never done this with an open car and am wondering if there is danger of the rear sagging. I could make a brace to put under the rear.
Also this car was "undercoated" from the dealer and is terrible stuff. I plan to eitheer dip the frame or have it blasted, I would like some advice on this, and also what to do with the underbody undercoating.
Thanks in advance.