Since i last posted in this thread i have removed the cat, installed a custom tune then altered the intake slightly and added some fuel to the current map. To those guys who feel the Tbird is anemic, as a stock 1600 you're correct. As a 1700 w/tors, it's not bad but still pales compared to the R3. But once i did this last mod, while it's still no R3, I think any R3 owner will no longer feel it's anemic at all. the difference is quite huge and it now gives me that same rush the r3 gives and torque is improved big time. The difference between mine now and how it was as a 1700 with tors and tors map is IMO as big a difference as there is between the 1600 and the BB kit.
The R3 is still well ahead, but now the bird is no longer a slouch at all and sits firmly in the "holy cr@p" camp. It's amazing how such a small change can be so huge. I never expected more than maybe 1/2 as much as i got. I did much more involved modding to my speedmaster and it never made a huge difference like this. I feel that as it is now it would make the choice between R3 and Tbird much more about things other than power, where as before the power difference was so huge it would always be the #1 thing you'd consider.