I'd be excited about a "plain" M3A1 APC. Each armored division had three battalions of armored infantry, plus there were several independent armored infantry battalions and the primary vehicle for them was the "plain jane" M3A1 personnel carrier. With fifteen armored divisions in action in the ETO by the spring of 1945 that means there were 2500-3000-ish APCs just moving infantry, plus the others assigned to engineer, armored artillery and tank units. A common vehicle that hasn't been available for quite a while.
Gary B.