Samsung Galaxy S4 - T-Mobile phone Install ROM question?

[aycartmiami]

So I have a T-mobile GS4 and I rooted it to the Google Edition ROM and my phone Model # changed to GT-I9505G. Okay but now I want to change ROMS and dont know which one to download either SGH-M919 which i think is T-mobile or a ROM for GT-I9505G. Please help I dont understand.