If you are thinking about this header set but are ambiguous beca…

If you are thinking about this header set but are ambiguous because you don't know what the size of of the y-pipe primaries are, here is your answer. Since my caliper won't reach past the sockets where they will cup the headers I can not get an ID measurement. I would not be surprised if they measured 2.25. However, the y-pipe collector does measure 3 inches.

Owner caption February 2017 · Photo 38 of 107