I don't have the answer either but there's one on e-bay right now I believe for a 69 L78, take the number off of that one and do a search on this site with that part number and it may come up from another post.
As for the other question I beleve the 70 LS6-M22 came with either a 3.31 or 4.10 rear only.
As for the other question I beleve the 70 LS6-M22 came with either a 3.31 or 4.10 rear only.
