i havent been on here in a few years but did get some very usefull info back in the day so here goes i no longer own a 3rd gen but have an 89 caprice but maintain a stock of 82-92 parts ive got a 92 tbi 305 camaro ecm the chip says ANTT 8026 and an 89 305 tbi caprice ecm chip says APFN 0604 both ecm units i have are 8746 models but are 4 years apart may be no difference at all but id lie to know so the chip is what im wondering about motor is stock internals with ultimate tbi mods, injector spacer and cat delete car has a 200r4 trans i am willing to sell the ecm cheap if anyone needs one located in south central pennsylvania thank you in advance for any advice you may contribute