Yeah, I know the A-D BUFFs had a bit snubbier nose, (which I actually prefer the look of) different engine pods and tail. Probably other stuff that you'd have to look closer to see as well. (I have Sanger's D as well, but I'm not to the vac-form level yet. Someone is doing an H version by them on iModeler and I am very grateful for his WIP. Seems like you almost have to build vac kits like an old stick and tissue model with ribs and formers under the skin!) I am totally stoked to start my BUFF, but I've made a rule with the HPH kits that I can't start one until one is finished. Getting decals that I liked for the Peacemaker got me fired up on it again. Once all the resin bits are mounted in the wings I think it will go the rest of the way fairly quickly! (The part I was most nervous about was the glass, followed by wondering if the tail will be level if I follow their scribing. One thing I did find out is that the seam on my fuselage does not run down the center. That was messing with my brain when fitting the glass as a kept expecting the seam to line up with the center frames!
Don't be jealous of the B-52, go get one! (But definitely buy direct. Much cheaper than going through a middle man and they ship quick once the kit is done. Usually out on Friday and here in Oshkosh before I get home from work on Monday.) If space is an issue you can leave the wings so they come off for storage! I was wondering how it would be getting the B-36 to shows, but it fits in the back of my Hornet, so my minivan should also do the job!