I am sure you will get many replies like, "why would I spend that much for a crate engine when I can build a 383 stroker for $xxxx.xx dollars"? What most of those guys don't really calculate is the price of all parts, cost of machine shop work, time to assemble (even if it is your own time), and all the other things you might you may have to buy to make it work (i.e, intake manifold, EFI, etc.).
There are also many guys who want to try to get the same horsepower with classic double-hump heads and a high duration flat tappet cam, but in my opinion, putting that much into an old head and cam design not worth it.
Based on the description of that Blueprint engine it is a complete 383 stroker with fuel injection. You would still need a water pump, flywheel, electric fuel pump, and a few other parts, but it wouldn't take much before it would be ready to install. And then it would only take a couple of days to pull your engine and drop the new one into your truck.
The Blueprint cam is probably right on the edge of being too much for a heavy truck, but it should work fine. The 700r4 has a good 1st gear, which should help bring the RPM up quickly into the right range, and you might want to consider a 2500 rpm converter to help even more.
That particular Blueprint engine is too rich for my tastes, right now, but I think it would be great combination in your truck. I'm looking at some of their cheaper engines that are in the $4k range, but they are 350's and they don't include EFI.
Bruce