hi im making a swap, from a 3.8 to a 4.6 dohc cobra engine, both 99, but i dont know what ecu i need, does it matters if i put in a 2001 ecu or its the same or is it better an 2001 ecu, cause i've heard that the 01 cobra was stonger than the 99 or something like that, becasue they did something to the ecu, i relly dont know, im new on cobra engine, so can someone tell me what ecu put into my swap. thanks.