WHAT DOES JDM HONDA B16B ENGINE FOR SALE MEAN?

I purchased my MRS 3sgte again in 2020. Parker from NW Motor s termed me and advised me I used to be getting a one particular-of-a-sort, clear 3sgte motor. and he didn’t lie. I’ve bought the pictures to show it in advance of installation. I have not found a motor this clean. Seems like it just arrived from the assembly line.He then hooked me up