My Pop flew B-52 Bombers. Tom has always wanted to build one so that is definitely one for our list! F4 good possibility. Not sure what a 105 even is... :? As for heavy artillery, the biggest thing we have that shoots is our Military Humvee Slantback, or our futuristic transformer Frog. No bombs or anything, but we would if we built the B-52. They don't get a lot bigger than that.... like that bunker bomb we dropped on that building over in IRAQ. Now that is some MAJORLY LARGE artillery there, Holy Crap! (Yet we still managed to miss the little weasel we were aiming for!) Have you seen our Humvee? What are you working on? (Maybe that would help.) Thanks all for your very nice comments. Cheers! Pam