so a truck came in the other day with a fresh layer of under coating, i realized why haven't i done this to my gp. new england is tough on cars and rust sux. so i was wondering if anyone else has undercoated their gp and if so a affordable brand with good results??
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99 3.8 Firebird 5 spd/99 gp gt,zzp pcm, HAI, STB, 2.5Dp to 2.5 dynomax custom exhaust