They won't let ya go right to the pics from those links, but I found the pics through their image archive.
The turrets won't be hard. Once you see what's on the styrene racks, you'll see. I would use rectangular rods for that whole turret except the gun barrel.
The Bucue really is only 4" long in 1/144 scale? The Bucue is quite huge compared to the jeeps. I don't know about the tanks, but it is a whole lot bigger than the jeeps.