[msgross]

This might be confusing but here are some pics. I measerued from the front edge of the front mounts since I figured that yours is the same and alreay mounted. The forward hole on the rear mount is 41" back. I know that you are going to need a lot more measurements than this but it's a rough start. I also measured my old mounts for you. 2WD and 4WD rear mounts are the same but the holes (that the cab bushing goes through) aren't drilled in the center of the mount. Might be better to put a cab on the frame and go from there.