LS plastic fuel tank

[Pranav]

but yeah they took away the return line so the pump plumbing and rails/FPR all changed when they switched. My guess is that you don't want hot fuel from the engine going back into the plastic tank.

When I LS swapped but wanted to keep the metal tank/pump in my 93, I had to find an early 98/99 fuel rail with the return outlet; not cheap!