I don't have what you need but I am in the same situation. I am swappin a ls1/t56 in my 71 and have to move the mounts on the K member back a few inches. It was very easy removing the nuts and bolts but I wonder how hard it will be reistalling them in their new positions. I used a 9/16'' distributor wrench and regular wrench with a 9/16 " socket to remove the bolts closest to the rad on each side as well as the lower most bolt. the distributor wrench would not work with the top bolt and nut closest to the firewall.......I found out that a regular socket and extention will go directly to the nut in the crossmember. it took me less than 30 mins to remove them all I have to drill new holes further back in the X member.I plan to use the Dist wrench with duct tape on the bottom to hold the nut in place while I insert the bolt from up top This thread saved me alot of work.....I was going to remove all the front suspension.