Hi, I've decided to do an ls/VTEC rebuild and have some questions about the head. I was kicking around the idea of buying a new bare head ( eBay Motors: Honda B16 VTEC cylinder head BARE..brand NEW!! (item 130220952143 end time May-14-08 19:28:35 PDT)) and installing all the internals. Only problem is, what type of head is this? A b16a1? b16a2, ect...? does it really matter? I don't to be buying internals for a B16a4 and find out that the bare head is really a B16a1. Thanks in advance.