Here is a online link to a fellow installing a Camaro/Nova subframe in a 58 Chevrolet pickup. Same basic frame as your 57
Just be warned that this web site listed DOES NOT have a profanity filter ( like Hotrodders.com ) and it ... may ...
contain vulgar words.
If that offends you ...
I suggest not opening this link.
Deuce ... Hotrodder.com Moderator