83 mustang 5.0 with a 340 hp ford crate motor should I go carb or efi???

[juiceman]

without a doubt carb. you will get the power with a carb real easy. and cheaper. your gas mileage will be the same if its tuned right. i got 17mpg on my car on the street. for that setup you will benifit best from a performer rpm intake and a 650 dp holley. a 600 vac sec. like everyone will surely sugest is not a good carb for that motor. invest in a good dist. like the msd. it will offer better tuning and is easier to use with the msd box.
if you do decide to go carb which will be the best choice for you, you can sell the injection conversion. i am looking for a mass air conversion so if you do sell it let me know and maybe i can make a good deal with you.