supercab transfercase crossmember help

[supercab78]

I have a 1978 f150 supercab 4x4 that I just purchased. It was in multiple cardboard boxes. Since it is a supercab it has front and rear leafs. My problem is the cross member for the transfer case is not the right one I think. The brackets I have will not bolt from the crossmber to the bottom of the frame rail. If any one could send me a picture of a f150 or f250 4x4 supercab crossmember It would be a great help. Thank you allan
[email protected] I have some pics of what I have now. http://www.bluecairo.com/al/rail1.JPG
http://www.bluecairo.com/al/rail2.JPG
http://www.bluecairo.com/al/rail3.JPG
http://www.bluecairo.com/al/rail4.JPG