adjustable fuel pressure regulator
 

ok well i looked all over the site i didnt find much on this topic so im going to ask myself. i have a 280z 1978 and im looking for an ADJUSTABLE fuel pressure regulator and ive been looking for one that fits my car. ive seen universal ones but i know about some uneversal parts and a lot dont fit the way they should. haha soo if anyone knows and recamends one let me know please and where to look for it thanks.

Is there a reason you need to adjust your fuel pressure?