WHAT DOES JDM HONDA REPLACEMENT ENGINE MEAN?

I bought my MRS 3sgte again in 2020. Parker from NW Motor s known as me and explained to me I had been getting a a single-of-a-form, thoroughly clean 3sgte motor. and he didn’t lie. I’ve obtained the photos to confirm it right before set up. I have not seen a motor this clean up. Appears like it just came off the assembly line.Engine came at an