GSX on BAT Lead

What identifies these frames and what would be different between the two?
What is different between them and say my 1970 Buick GS 350 frame.
Thanks
Chris

 

I don't know what the differences were between the "CC" & "BW" frames but the very early 70 455 coupes came with the CC frames and then were changed over to the BW frames.

I believe the 350 coupe frames used thinner metal for the side rails....
and the Convertible frames were also different.
Duane

 

Only if he donates the difference of $1,000 to charity.

 

Thanks. I knew about convertibles but never heard difference of big and small block chassis. I wonder if it was like that with all brands of chassis cars.