Some came with minimal production head P8R which had 33mm consumption valves (Commonly observed on VTEC B-series) vs 31mm intake (non VTEC B series), and The top experienced an 84mm shrouding vs 81mm for all other B series heads. The Honda B16 engine has cemented alone while in the JDM https://b16-crate-engine69135.daneblogger.com/38560396/how-jdm-honda-engine-can-save-you-time-stress-and-money