This was the Ebay listing but it has been closed. I bookmarked it for reference. He had pictures of the crossmember and the reasons why he was building it.

http://cgi.ebay.com/ebaymotors/1948---1954-Chevy%2FGMC-Pickup-Front-Subframe%2FSuspension_W0QQitemZ270340031302QQcmdZViewItemQQimsxZ20090205?IMSfp=TL0902051510003r28279