Merchant automotive has came out with an upgraded LB7 return line bolt. If you have ever changed injectors in a LB7 you know how easy the OEM bolts can be damaged and there not cheap to buy new ones.
http://www.merchant-automotive.com/...line-bolts-at-the-injector-lb7-2001-2004.aspx
http://www.merchant-automotive.com/...line-bolts-at-the-injector-lb7-2001-2004.aspx