Chester, I have not done this myself but I do know there are aftermarket dealers of the mounts you need. Perhaps their sites list the dimensions you are asking about. Good luck with your sahdetree project.

Here is a link for what you are trying to do.

http://www.chevytrucks.org/tech/s10_frame_swap.htm

Last edited by DrewP; 01/21/2010 12:17 PM.

Drew