Why do Mopar Engines Have a Different Sound From Chevys and Fords??

here are the two setups lol 5k 350 motor alone and 2500 total on my duster so far but when i finally finished his z car 3 weekends after i got the block back from the machine shop its actually is a cool car now lol i usually hate z cars. but he still agrees mine sounds better lol the second pic of the z is him checking where i had to cut little tabs out of his body to fit the pipes right wasnt too happy until i showed him why lol.