Long shot here, but looking for aftermarket headers with crossover for 87 GN. My stockers are beyond repair. Looking for the stock style, not KB style. Just gauging what is available thanks.
I may have missed it but have you verified the grounds on the back of the passenger head? They can get stringy if the engine was ever pulled. I added new connectors and attached them to the intake instead. I also added additional grounds which improved the idle and smoothness of the engine. I...
I've had good luck with the Wells unit from Autozone. And it has a lifetime warranty which makes troubleshooting much easier. Most of the others only carry a 1 year warranty I believe.