I swapped my 4l60e for a t-56. The 4l60e is on sale with the auto shifter, crossmemeber, center console bezel, pedal assembly, lines etc., all the parts that were removed with the 4l60e transmission to install the t-56.

http://cgi.ebay.com/ws/eBayISAPI.dll...MESE%3AIT&rd=1

Thanks for looking.