WHAT DOES B16 ENGINE AND TRANSMISSION FOR SALE MEAN?

Some came with restricted output head P8R which had 33mm ingestion valves (Typically found on VTEC B-collection) vs 31mm intake (non VTEC B collection), and The top had an 84mm shrouding vs 81mm for all other B series heads.A kind of evolution has taken location with the B-series. A scarce power plant discovered beneath the hood on the Integra Type