Some arrived with minimal output head P8R which experienced 33mm ingestion valves (Ordinarily located on VTEC B-series) vs 31mm consumption (non VTEC B series), and The top had an 84mm shrouding vs 81mm for all other B series heads. Even crazier is this engine even now has large tuning potential, https://erickzqhxo.develop-blog.com/47569361/about-b16-engine-and-transmission-for-sale