5l conversion

so, ive got a complete 5L conversion lined up to buy to drop into my vn but it has a vs trans, loom and ecu with it. am i able to use all 3 without any issues? would it all work as if it were a vn trans loom and ecu or will i need to get things tuned/programmed or whatever. Cheers

Hi all, i have just got a vs series 3 ute 5L full conversion, im gonna put it in my v6 VR, my only problem is im being told the ecu will not fit and i cant do anything about it, can someone proove then wrong and tell me what the main diffrences are and how to overcome them? Cheers