You need to stop right there. Keep this line up and the mods will flip it over into the political forum. Zombies, we can get away with. You start talking about zombies, clowns, and monkeys in the same thread and nobody will believe it's not about American politics.
I'm with fscrig75 on the M-113. I'd go with an A-2 version for ease of maintenance(greyhound bus engine and trans!), preferably the M113-A2 ACAV. 'Abandon the mortar system, and the M-106 might be better because of the larger rear hatch(cargo access, baby!), but then you can't have the 60s on each side(hatches flip to the side instead of to the rear). Oh, yea,... All versions of the 113 family can swim too, although I wouldn't want to tackle surf in one of them.
decisions, decisions,....