Ok I just bought a used MTI lid for my car but the MAF housings wouldnt fit in it. I dont know where I can check the part number since the parts department is already closed @ the dealerships: 89873537740. I cracked the WHOLE opening on the lid to It was just a straight black MTI lid. Doesnt it have a 78mm opening? thanks for any help

 

an ls6 maf is 85mm so if its way too big then it's more than likely a delphi.