My tuner thinks the ECU on my car is screwed so I need to get a new one. He told me Ford fixed the problem the 96 and 97 computers were having with the 98 models and that I should find a used 98 ECU. I have found one but what do the ECU code numbers mean? if I want to replace my 96 manual tranny computer what do I need to know to buy the 98? I know there are different ECU codes but what is the difference? Can I buy any 98 coded computer to replace mine as long as it is for a manual transmission? Please help guys.