I'm replacing the headers on my drag car. It has a 383 650 hp 2600lbs race ready 5.14 gear. Had 1 7/8" with 3.5 collectors. I ordered new Kooks stainless headers they are 1 7/8" but 3" collectors. The collector looks really small compared to the 3.5. The headers are a fair amount longer as well. Is 3" collector big enough for 650hp 7000 rpm drag car no exhaust? Thanks

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