For F-250 351 windsor to 300 6 swap problems

ok i have a 1987 for f-250 it had a 351 windsor carbed i blew it and i droped a 300-6 fuel injected in it ok i have it all back together i swaped all the wiring the computer basicaly i took every thing off one truck and put it on mine all except the wheels and all that stuff now my problem is there is no gas getting to the injectors it goes up to that point and stops i have had it running by spraying gas into the injectors with a spray bottle i know the motor is good because i actually drove the truck to my place with the 300-6 in it to part it out so and it ran fine every one tells me my injectors are shot but how when i drove the truck not even a month ago i went to a ford garage and they basically told me to hall it to a junk yard they blew me off and wouldnt listen to what i had to say they said it was impoosible to to do this and i dont think so if somone could help me out i would appreciate it
[/URL][URL="http://en.wikipedia.org/wiki/Carburetor";] (http://en.wikipedia.org/wiki/Carburetor)

check and make sure you have power and ground to the injectors. if it ran right before there is nothing wrong with components it is something you are overlooking or built in.