Best way to attach mufflers to my headers?

Thanks for the info so far. Want to go with a quiet muffler. Any suggestions on a muffler that is quiet?

You going to sneak up on the competition

I like my Dynomax 6" round muffs FWIW

I slid the mufflers over the headers and drilled two holes in each and ran screws into them. Just unscrew the two screws on each muffler to take them off

Did the same thing but I used pop rivets instead of screws. No crush on the muff.

There is a darn near local to me outfit ( hearttthrob exhaust )that will custom make pipes for you....I plan on having them whip up a slip on pipe for the 3 1/2" collector and weld the muffler to that.
I am puzzling over necking it down to 3 " or not , but plan on about 3 feet of pipe before the muffler with turn downs pointing at each other to try and attract a little less attention on the street.
Something about cancelling frequencies I read once...if I am misguided in my thinking , when you're done laughing , correct me.

I used band clamps with tabs welded to the frame to hold the exhaust up

I ran the Magnaflow race mufflers and the Pypes Race Pro mufflers, neither slowed the car down at all and sound nice!

Thanks for the info guys. My collectors are 3 1/2.