How much work would it be to change the OBDI port in my car to an OBDII port?

I want to do this so i can use a flash tuner on my car. It is a 1994 mustang GT.How much work would it be to change the OBDI port in my car to an OBDII port?
can't be done. the computer in your car runs on a different programming language than obdll. what you can do is try and find maybe a different PROM chip for the car.How much work would it be to change the OBDI port in my car to an OBDII port?
You cant because obd1 %26amp; obd11 are different computer systems . If your tuner is designed for obd11 it wont communicate with an obd1 system .