has anyone replaced the front flex pipe on a 2007 GTP 3.6l recently. It appears that this part is no longer available. Do parts from 2008 GXP 3.6l interchange? My parts person who can usually find interchangeable parts can’t find anything on this. I think that a walker 51131 may be the correct length and I’ve seen on eBay a part from Canada for a Saturn aura that’s looks the same but everywhere I’ve checked the 2007 models are unique. Can anyone help??? Thanks.