Some arrived with limited creation head P8R which had 33mm intake valves (Ordinarily identified on VTEC B-series) vs 31mm consumption (non VTEC B series), and The top experienced an 84mm shrouding vs 81mm for all other B series heads. The B16B, present in the long-lasting Honda Civic Type R, normally https://b16-crate-engine45431.ageeksblog.com/38315009/b-series-honda-fundamentals-explained