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

[fantozi]

I have a 83 mustang 5.0 now and just put a new motor from ford in its a new 302 with 340 hp. My car is carb'd now but is it worth going to efi?? I do have the stuff for the conversion but im having second thoughts, ie a stock manifold upper and lower 19 lb injectors stock throttle and mass air and the new fuel tank? Will the stock EFI stuff perform better than a weiand stealth manifold and a 650 carb?? Just pickin you heads ???