I just picked up a 93 lude and the h23a1 is blown, but the head is still good. So I have a f22b1(sohc v-tec) accord engine laying around and I have been reading up on swaping the h23 head on, but I still havn't found the answer to my questions. I know I need the F23 head gasket, h23 timing components, my question is do I need to plug any holes on the block, I've been researching and have been gettting mixed answers. Also if anyone could help me find the part-number for the f23 headgasket, thanks.