Got the big back window from Scott and here are some pics so far.
http://i270.photobucket.com/albums/jj120/Chevanman/1961%20Fleetside%20Chevy/100_1675.jpgTwo Pieces have been removed form both cabs.
http://i270.photobucket.com/albums/jj120/Chevanman/1961%20Fleetside%20Chevy/100_1674.jpgRemoving spot weld gunk from seam.
http://i270.photobucket.com/albums/jj120/Chevanman/1961%20Fleetside%20Chevy/100_1676.jpgBig window is in place to check for fit.
http://i270.photobucket.com/albums/jj120/Chevanman/1961%20Fleetside%20Chevy/100_1678.jpgRubber mallot helped to adjust the fit to be more snug at the seam.
After all of the research I have done on this project, it seams like things are going very easy. Just alot of grinding.
Next is to use adhesive to bond the two pieces where the seam meets. Than weld window into place and than cut out remnants of little window.
Will keep things up to date on the progress.
Thank you for all the help out there from you Stovebolters!