And so the block is Forged K20A on the other hand it has been introduced to my attention that each one JDM blocks are either stamped K20A or K24A. There isn't any change in the badging with the JDM blocks. With the cylinder head It's a true RBC cylinder head https://judahagmui.blogdon.net/13b-rew-for-sale-can-be-fun-for-anyone-48682599