hi guys, did a search and it came up with a bit, but is a b18c4 bare block the same as a b18c6? or c5 as you guys have? ive come accross one and id like to know before i commit to buy that apart from internal, the block is the same size, bore and all the rest of it. im sure someone knows.... cheers

 

Yes, the bare blocks are the same between B18C1, C2, C3, C4, C5, C6, C7, C, and B16B.