help my slant 6

hey i want to put a good ol slant 6 in my 73 duster and i don't want it to sound soft and slow i want to give it that loud rough tough true american muscle sound and i know i can change the muffler but what size and i wanted to know if cherry bombs sound good on a slant 6 cuz there my fav but are there any good cams i should put on it how bout headers and intake please give some ideas

Thanks
Connor