WHAT DOES JDM HONDA B16B ENGINE FOR SALE MEAN?

I purchased my MRS 3sgte back in 2020. Parker from NW Motor s identified as me and told me I was obtaining a a person-of-a-type, cleanse 3sgte motor. and he didn’t lie. I’ve bought the pics to demonstrate it in advance of set up. I haven't noticed a motor this thoroughly clean. Appears like it just came off the assembly line.This engine is awes