Some came with limited creation head P8R which experienced 33mm ingestion valves (Ordinarily found on VTEC B-series) vs 31mm intake (non VTEC B series), and the head experienced an 84mm shrouding vs 81mm for all other B series heads. Identification: (98 spec) PR3 stamp on engine head, top radiator hose https://b16b-motor24567.mpeblog.com/71304420/details-fiction-and-b16b-type-r