Until you get to the "Stage" blocks, the 109 is the best, I think. So, if ain't a 109, it isn't "as good or better". It might still be "good enough" depending on what you want to use it for. The sequence in numbers, coming after the 110, kind of suggests that it came out of a later vehicle than the turbo Buicks???? The turbo TA may have had a different block, don't know about that. I know it had different heads, crank, and pistons.
