I'm after a new cylinder head for my B18C4 (I've now found out is the same as your us B18C1) so i can slowly get it ported and polished and fit all my new valves, cams, runners, springs etc. myself so i can then just get it dropped in to save on labour costs.

ive been offered a skimmed one with the part number P13 HF-1. But thats all the guy knows about it.

So does anyone know what head it is as ive been googleing and am still clueless?
and is it worth getting the skimmed head?

edit: i finally decided to do the easy thing and check mine as i got home. so in answering my question the head for the B18C1 and B18C4 is the P72.

but does anyone still know what the P13 HF-1 is?