A B16 head is generally mentioned to get better for forced induction as it's greater move figures when compared to the B18. However, a B18 head is usually ported and polished to realize identical flow figures as one from the B16. I purchased my MRS 3sgte back again in 2020. https://manueljbqsr.blog-gold.com/36301059/facts-about-b16-engine-for-sale-revealed