holley street dominator plz help

well i wanna make it turn heads everywhere i go and make sure its got the power to blow peoples minds lol but street legal but just barely lol and it has a 727 in it i already know that the rearend needs to be replaced and im trying to figure out what it sounds amazing but has no power it feels to me like its either starving for fuel or getting to much so i figured i would go with what i know and use eddy....this is my first mopar muscle car i use to own a 77 firebird formula 400 with no other than the sb 400 and a muncie 4 speed....i put a ton of work into that car when i was 21 and it was quick....i went with a torker 2 with a eddy 750 it also had 6x heads hooker headers comp cam roller rockers forged pistions i think it had a 1000 cfm intake not sure of the numbers but i never had to worry about clearance cause i had a trans am shaker hood on it but this car was my pride and joy. one day while i was at work ( i worked building auto zones across the nation ) i get a phone call from my buddy that i had the car with that he was in jail and needed money to help get him out... since i was finishing the job that afternoon i told him that i would be there the next day to bail him out...i drove from Virginia all the way to Texas and straight to the jailhouse where i bailed him out. I drove him to his house and when i got there i asked him wheres my car he responded to me...where is my car ( 92 mustang fastback 5.0 gt) so at that point we called the police and made a report but alas i never seen the car again and i lost hope in building anything else.. well my wife and i decided last month to buy this 72 demon for 3000 that runs and only needs minor body repair but new interior but like i said the car just doesnt have the "balls" that im looking for my formula ran 11.23 in a quarter with slicks so thats what im looking for again with a mopar...ive always loved mopar just could never find or afford one now that i can i wanna do this right ya know