I messed up one of the bolts swapping my adjustable fuel pressure regulator in and I stopped at napa, murrays, auto zone, and two hardware stores looking for a replacement and got nothing. They are between 3&4 mm width and the pitch is between .5 and .7. I'm going by metric cuz nothing english was even close. There's a couple V6's at the junkyard by my house... do those have the same regulators? Also, I can't remember which way the vaccuum tube points lol. Is it slightly toward the middle of the fuel rails or towards the outside? Thanks.

 

The 6-cyl engines do use the same FPR. Most likely the screws are also the same. Gm tends to be consistent is areas such as this.

The service manual for '92 shows the vacuum port facing the front of the engine.

RBob.

 

Well daaaannngg, it looks like I'm gonna spend my saturday at the junkyard gutting a 2.8 lol. Thanks man.