Separate names with a comma.
I have the clam shell mounts and the brackets that are for 70-72 Camaro BBC.
I can take some pics tomorrow if needed.
With the 502 being a "tall deck",your in non stock territory.
Sorry I can't help.
I put a BBC in my 73 many years ago
Not saying you need this NOS stuff
Can take pics of my setup if needed...