others that know more are going to chime in.. but right off the bat with a 97 engine you have obd II with the crank sensor on the timing cover and im sure there are other differences... 93 was the only year that used speed density on lt1's and i wouldnt run anything from 93. its like a 1 year motor almost haha... probably would be easiest to run a 96 or 97 pcm.... other chime in......... now
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
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