Late 73 and up super only chassis will work, no standards. They changed some of the suspension parts in mid 73. Supers have strut suspension. How bad is the rust

if only pans just replace them. It is better to try and keep your chassis as the VIN # is stamped on it by the shift coupler inspection plate.
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derf
No matter where you go,there you are.
My post are my opinion of what has worked for me but are not the gospel

What I post is what I do on my cars. I am here to try and help not to impress or boast