This is a revised design of our original Billet Fuel Logs.  They do not come with an adjustable regulator, they are designed to reuse your stock regulator to keep costs down.  If you would like to have an adjustable regulator then you can just order our original logs.

How to order your fuel rails:

Engine:
Series II: This is for a factory supercharged 97-03 Grand Prix, 97+ Bonneville, 04-05 Impala/Monte Carlo, or any series 2 supercharged 3800. These are return style fuel rails and reuse your stock regulator that is located in your stock fuel rails.
Series III /04+ GP (returnless): This is for the 2004 and up series III supercharged 3800. These are returnless style fuel rails and do not use an external regulator.

Model:
Standard-No IC- Select this if you are not running an intercooler on your vehicle. 
1" Intercooler- Select this if you are running a 1 inch intercooler core on your vehicle(Short Stack IC).
2" Intercooler- Select this if you are running a 2 inch intercooler core on your vehicle(Stage 2 IC).

Stock fuel rail removal instructions:
http://s3.amazonaws.com/zzpstorage/instructions/Fuel+Logs/Billet+Fuel+Rails-removal+b.pdf