To tell you the truth...when I was buying manifolds and machining the JGC manifolds I used to get up every morning and search craigslist and ebay for any 340 manifolds. There's more than one website that lets you search craigslist by state and city. I would spend an hour every day searching for 340 manifolds in every state to fill my orders for FABO members. Many times I had to buy the "set", driver and passenger 340 then sell the passenger 340 separately. JGC manifolds were easy to find, I gave you the website. I didn't make much money at all but it was fun!!