Remember too, the 93's are not the same PCM as the 94/95 PCMs. It uses specific programming, and while the Winflash OBDII tool will program it, the Tunerpro ADX will work, the XDF will NOT WORK with anything 1993 other than the W-body 3100 engine PCM.

You may need to get a 94/95 PCM if you want to get into it too far.