Ls1 fuel rail fuel pressure gauge adapters
 

Since I have the new rails I won't be needing my adapters for the schrader valve for the stockers. These are Earls AN fittings that will allow you to put a 1/8 inch NPT sender on your stock LS1 fuel rail. You justhave to pull the check valve out of the schrader valve and put it on. They are blue anodized. Pitch me $15 and they are yours (shipping included). May also work on TPI and LT1, but not sure.