Delphi MSD 50lb injectors for my set up

[blackm6gto]

I can get a set of 50lb msd/Delphi ls1 injectors for dirt cheap from my brother. My question is will they have any adverse affects since they are probably bigger then I need, but my tuner said that I was pretty high on the injector duty cycle I dont remember but it was over 80 percent on my stockers. Will they lower my MPG?

[blackm6gto]

Since I am getting them for almost half the price new and I know they only have about 3000 miles on them i am going to run them. They will also be leway for me to run a dry shot in the future.