Hi Pud!
(Man, that feels weird saying that.) Not sure which B-52 variant you have but I did a quick check for B-52 decals. I know those are few and far between. I'd love to get my hands on that giant kit! I built one back in the '80s and I'd sure like to have another crack at it now that my skills have improved since I was a kid.
Anyway, check out the Flightdecs web site. Do a search for "B-52" and you'll see a couple of sheets come up. One covers some Gulf War planes while the other sheet carries all the stencils. I think if you click on this link, it'll take you right to it. I've never posted a link here before so I hope this works.
www.flightdecs.ca/a_warbirds_72.htm
I hope this helps!
Eric