The rear crossmember ties the spring mounts together as well as locates the bellhousing to the clutch linkage and driveshaft.
Moving it would be a pretty tough option.
With a Chevy engine and a GMC crossmember, you'll need to use the modified mount that is/was welded onto the back of the front crossmember.
I have a '56 GMC that had a similar setup in it that I cut out since I'm putting a GMC 270 back into it.
Last edited by OlBlue; 01/31/2012 6:15 AM.
