I have a set of manifolds I got from our very own Treblig who has taking the time to research and put these neat manifolds together. What they are is a 340 drivers side and magnum passenger side with the outlets matched to 2.25ā. stock manifolds are generally 17/8ā. These give you the ease of fitment, with out the hassle of headers. Worked great for me for a number of years but Iām making changes to my car. So they need to go $300 plus shipping from Sharpsburg ga. I have the down pipes that fit great but you may need to use them as a template as they where cobbled together with different pipe and crappy welds that leak.