s13 black and redtop heads interechangable?
Hey guys i was just wondering if the heads from a black top and a red top are interchangable i have a red top with a warped head and my buddy has a black top head in great shape i remember hearing that they are but i just want to make sure and if so what do i gotta do to make it fit properly...and sorry in advance if there is a write up on this already but i couldnt find it and dont have the time to search for it if there is a write up can i get the link please
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