It seems that HpH once released a 48th scale B-36, which is just crazy in and of itself! However, they now plan to re-release said monster, as an "upgraded kit" and it will probably retail for around $400!
My dream would be to build one of these, along with an XF-85 Goblin parasite fighter. The only problem is that completed combo would take up my entire living room! Talk about a "man-cave."
http://www.britmodeller.com/forums/index.php?/topic/235010574-148-convair-b-36-peacemaker-fiberglas-kit-by-hph-future/
Rick