a 98-03 regal or grand prix PCM will work. I had Ed Morad ship one to ZZP when I got a PCM for my 04 Monte that was still under warranty. That saved me in shipping costs. That way I could swap it back in if I took it in for something incase they did a PCM flash.
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03 GT, STB, GM HD sway bars, 35% tint, GE893(37watt)fogs, Flowtech Terminators, 180 T-stat, ZZP DP & PCM, Ceramic PLOG & Crossover, 18" glasspack, 2007 17" Mustang Bullits 235/55/17 Pirelli PZero Nero, 12" R1 D\S rotors, gutted air box, GTP radiator