go on........
um
where the edge of the 20 r headgasket would fit between the 20 head and 20 block, when using a 22 block and headgasket it leaves a kinda sharp edge around the bowl of the head, just smooth that edge a little with a dremel, or even a small file, to prevent that edge from glowing and causing detonation, helps to run the cheaper gas, you dont want to cut it down to fit the 22 gasket cause then you might as well use the 22 head
