i purchased a JDM exhaust for a Z, and now need an extension (goes between the y pipe and new exhaust) to install on my G.

performanxce nissan carries them but are out of stock and don't know when they'll get some more in...

anybody know where i can get one of these ? i don't want to take it to a muffler shop and welded on cuz just in case i want to sell it, i want the option to sell the exhaust to a Z owner