美国采购需求：气缸体、气缸盖定制、柴油发动机气缸体、柴油机气缸体、成品变速箱壳体、差速器定制

I'm looking for a 2-stroke V6 engine block designed for compatibility with Mercury outboard motors. It's crucial that the block meets all necessary specifications for performance and durability. Also, I'd like to know about any available options for customization, as well as the materials used in your manufacturing process. Additionally, please provide details on lead times for production, minimum order quantities, and pricing structures. Understanding warranty terms and after-sales support would also be appreciated. Looking forward to your prompt response with the requested info!