I bought the poly bushings through LMC and I had to shim the cab mounts in order for the body lines to match up, there was that much of a difference, and I'll probably change them sometime in the future with the stock Rubber mounts.
So, if you haven't already installed them, might want to save your self some grief and get the stock type mounts and be done right the first time....Just my opinion.
Ben
__________________
"Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time"
“Serious Black” my 1971 Short Bed Fleetside Sold to
an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten”