Auto Transmission Shifting Issue Since 4bbl Upgrade

I'm going to guess that most of the existing linkage will work, except for the parts right at the carburetor itself. Might be worthwhile to call A&A Transmissions, maybe they can supply the right OEM parts. http://www.aandatrans.com/search.aspx?keyword=linkage
I only suggest this because the Lokar cable I had was somewhat problematic too. After a lot of trial and error, I really think that the correct factory setup works the best.