GMC paul door seals are great!

[GMCPaul]

These are not drop shipped we ship them direct from our warehouse in Indiana. they do come to us pre-packaged though. It only takes a few seconds with a pair of side cuts or a razor knife to cut the bulb portion of seal at either end where they meet under the door sill plate. DEFINATELY MAKE THIS CUT, by cutting it it tnen allows the seal to properly release the trapped air when closing the door. SO DO NOT JUST BUTT THE ENDS TOGETHER WITHOUT CUTTING THEM unless you want your doors to close HARD.
GM instructs you in the 67-72 Truck Service Manuals to also perform this cut when installing the seals even if there is a minor gap where ends meet and they also state the reason for this is to provide air passage.
Paul Jr @ GMCPauls