Had mechanic swap out rail with injectors to solve a fuel leak which has not been solved completely. They used that from a 96-99 vehicle. A check on Rock Auto determines that the fuel rail and injectors are unique to the 95 so my question is does that make the 96-99 one incompatible? I am chasing down a misfiring engine, posted in a separate post, that I see the PCM dumping fuel but can not keep up and it is running lean.

The S2 L67 injectors probably flow a bunch more. The 92-95 injectors should be interchangeable for you.

To run bigger injectors, the ideal thing would be to reprogram the pcm for the proper flow. Dinking around with an adjustable FPR might get you running...but it'* a bandaid.

Bill, I am confused a bit. I have a L36 engine. What I am trying to determine is whether the rail and injectors from say a 97 bonneville L36 would work in my 95 L36.

I believe they should work for you.

Sorrrryyyyyy not enough caffine when I answered. Shot from the hip thinking Series 1 when you said unique and 95 w/o noticing your sig.

Off to get more go go juice. 95-99 shouldn't be a problem to swap.