i have the edelbrock 500 4 barrel on my 292 inline six. i don't have mine tuned purfect yet i need to take the time to do it. i haven't drove it since i installed it on the engine. i researched the holley 390 verses the edelbrock 500 and both had pros and cons for my application. the holley 2 barrels are pricey for what you get. good luck on finding what you want. hr
