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Discussion Starter · #1 ·
Whats the best hi-flow cats for the money/cheaper. and headers.

I have a 2000 5.3 with true duals no mufflers out at 65 degree angles. are hiflow cats and headers going to make a sound difference?
 

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best hi-flo cat id go magnaflow.... I have flowtech shorty headers and they are nice and wont break the bank... you will prob get a little louder and deeper sound with the combination of the two also
 

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Discussion Starter · #5 ·
about how much does a set of magnaflow hiflow-cats cost?
 
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