Anybody used Kook’s header mufflers

[B3422w5]

debating going back to dynomax 3 inch in, 3 inch out bullets. Have had several sets on different cars. Loud, but havent gotten a ticket with them ever around here.usually just keave them on at the track
I see Kook’s makes a similar type header muffler. Just curious if anyone has tried them
R300-14 is the part number of them