when you guys swapped to lt1s did any of you use 4L60E transmission and what did you do for the rear cross member for the transmission mount does any one have pics of what they did. and how much do i need to shorten the drive shaft i hard 3''.

3" on the drive shaft is correct. you can buy double hump transmission cross members for the 700R4/4L60 through Jeg's and Summit. Also, "Iceman" on maliburacing.com sells a lightweight version and is a bit cheaper then the others. He is also on ebay under user name "pitqueen".