I was wondering why a downpipe made for a sentra will not work on a g20. All the headers for sr20de's are universal so why won't the downpipe off of one work. i only ask because i want to get a 3 inch downpipe for when i go turbo and when it comes to a P10 g20 there are no really good options, Also what is shuck bent becuase i hear that the JGY are shuck bent and i don't know what that is.