Thanks to my knowledge gained in practice with automotive customization, I switched out my old jets for these Edelbrock replacements. The difference was astounding- my car felt smoother and more responsive while accelerating. I appreciated the precision measuring to ensure a perfect fit. The only downside is that they are a bit pricey, but the performance boost is well worth it. Overall, I highly recommend these jets for any performance car owner looking to upgrade their exhaust system.