I have an original 4 barrel shaker base plate, let me look up in my 70-71 parts book to figure out if they are different or all the same. I'll let you know, probably tomorrow.
Ken
I looked up in the parts book, very confusing listing I must say. Looks like a 4bbl base plate is the same no matter what engine. Year one lists a metal 4 bbl base plate as fitting all engines as well.
I can send you some photo's later if you want.
Are you looking for original parts only?
Here's a couple of pictures. I noticed in the parts book they list 2 different "feet" 1 at 1 1/2" and 1 at 3" They are called "foot air cleaner retainer support bracket" I guess they must bolt to the bracket's that are on the base plate. Anyone know for sure?