Greetings!
Currently my project has an older 3.8 fwd setup, but am prepping a 3800 SC (from 02 Bonnie) for the car.
The bonnie trans was broken, but I have a 98 Regal GS trans, and am using the ECU, subframe and portions of suspension from the 98 as well.
The thread on the 4t80 swap lured me in - wanted to see how it came out.
Maybe I can also contribute here - I have general experience from the current 3.8, the ingoing 3800, and an 03 Regal LS that's my DD.
http://laserpubs.com/personal/?page_id=125