Hands down best and favorite of mine is the 71 Chevelle SS that I still own. Ordered it new when I was still in college, insurance was a bit of an issue at that time so I had the choice of getting a BB and automatic, or a SB and 4-speed. I really wanted a 4-speed so I went with the L48 350 and the 4-speed, it has a 3.31 12 bolt, the 3.31 is a bit of a comprise gear ratio but it worked ok for me. Only thing different I would have done is gone with a bench seat instead of buckets and a console, found out that crawling in the backseat on moonlit nights was a bit of a pain, but still worth it. ? 211,000 miles on it, never had the heads or pan off. It's sat for awhile now, I have a new master cylinder for it and it needs a new radiator, just haven't gotten around to it yet.