Not Ranked
I bought my SPF Roush 427 SR TW used. The original owner was not happy with the original Carb and bought a Bigs 750 CFM Stage 5, no choke. He was much happier with the new one. I get almost 15 mpg easy freeway, 12.5 average, really bad when on it. I'm very happy with the set up, but I have nothing to compare it to.
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