Thanks for the response! At the present time, the car has no ECU. My desire was to get the 99 clone so i'd have more options later with the car. For now, i want the car to run like stock so I planned to turn off the 99 specific functions(extra 02, etc), and add the later model purge solenoid so it was equivalent to OEM. Right now, I just want stock driveability. If I just do this, would I still have to tune further, or would this be safe until I am ready to invest time in properly tuning (maybe next year)? If I had the option of using the stock 93+ crank and cam sensors would that be better? (My car had a 93 engine installed with the existing crank/cam sensors sitting there, however it has the CAS and that is what's wired up).