help picking a shift kit...

I don't even consider any kit other than a Trans-go. Their the only kit I have found consistent. Before I knew about Trans-go I installed B&M, Turbo Action, and Mopar perf. kits (pretty much all the same kits) and sometimes they worked ok and other times they had major overlap issues. If you just want to firm it up the TF-1 will do you fine. The TF-2 is a little more aggressive but like Johnny said it depends on how much you drill out the transfer plate. Trans-go's are not the cheapest kit but they are by far the best. They don't just make it shift firmer, they correct issues inherent to the torqueflites.