i just put mac long tubes on my 98 auto gt bout 2 months ago, love the sound! i gota post up a clip wen i get a chance, but install was 450 my set up is mac long tubes mac prochamber and flowmasters sounds awsome
wasnt hard at all, didnt drop the K, just had to adjust the steering shaft/column, the biggest pain in the ass was the drives side header bolts took like 8 hrs lol but saved money in labor, i called a bunch of places avg price was 400 - 600
i got mine for 340 at americanmuscle, there the cheapest but they work awsome, i read so many reviews on it some were good some were bad, but install was easy and sound great so mac's LT's get an A+ from me