Damdonzi and seahawk,
I did own and drive the boat with the TRS drives. When I put 800s in the boat I tried to continue to use the TRS drives but the performance and reliability were not good. I used to have 600hp motors in the boat and it did 69-70 mph, when I put the 800s in I hoped to break into the 80s but fell short (77mph). I also like to play in rough water and broke three drives in one season.
After the Arneson drives were dialed in on the boat I have done 91mph and can do 87-88 any time. I run round ear props, they run much better than cleavers on my boat. With the round ears the boat carries very well and rocks in rough water.
I am very happy with my conversion. The boat is balanced well and I can't break these things.
Thanks to Rik (Arneson), Dana Berkland (Twin Disc), Brett Anderson (BBlades) for the help and advice.