Thanks for the replies and the info.

My plan is to use a 2" spacer between the bottom of the TF frame and the rear horns of the TA subframe. Should look something like this: (not mine)

http://img.photobucket.com/albums/v246/rbachman/FiftySix%20Chevy%20PU/TF80TAClip.jpg

It appears the top of the TF frame is flush with the top of the TA subframe.

Bob