No worries on the search jeffl, the search function on these forums are pretty poor sometimes!
The external tie bar tightened up the feel of my 300's handling, even though the individual outdrives did not have the typical Mercruiser slop in them yet.
But, the Simrek drive shower was the best addition. It kept the drives cool enough that even after a several hour run I did not gett he chalky residue on the drives when I settled down off plane. And, once I added them, the drive fluid came out a lot nicer looking every year.