I'm sorry if this has been covered but I've tried searching (only on my phone) and came up with pretty much no info. I'm trying to tidy up my engine bay and want to get a spark plug cover. Now I've seen a couple of photos of a black cover with with Mitsubishi embossed on it. I've gathered so far that it's for the 6A12. But what I'm unsure of is if it bolts on to the 6A13 rocker cover or if you need the 12s cover as well. Any help on this or other options would be greatly appreciated.