美国采购需求：铝压铸件，高性能汽车，铝制汽车零件，气缸盖制造商，发动机零件，OEM供应商

I'm looking for the cylinder heads for a specific vehicle, and I'm hoping you can help me out. The vehicle in question is a Ford E450 with a V10 engine. I've provided the VIN for reference, as it's essential to ensure we get the right parts. AutoZone couldn't locate the part numbers for me, and they suggested reaching out directly to you. If you could provide the part numbers for both cylinder heads, that would be great. I appreciate your assistance in this matter!