I'm converting my EBII 4ltr six from 4spd auto to T5 manual.
I have all the parts including the manual ECU.
My car is pre smartlock but I'm not sure about the manual ECU.
How can I tell if it is smartlock or not?
What problems may I have if I were to try and use it?

If the ecu is a smartlock ecu, it will not start unless it recieves the correct signals from the smartlock module.
If your car is non smartlock, and the ecu requires smartlock, i have a wire in module available which will make it work.