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putting a throttle body spacer on my 99 blazer ls with a K&n fliter and thinking about a mass airflow sensor. 19"s, dropped, and body kit this summer. and i am wondering about an exaust system...now stay with me, don't want straight pipes (well i do but i don't(confusing)) so insead of bending a whole new pipe i figured i could by a smaller muffler, one with a lot less air restriction and it would have a lower rummble and just take the old one out and replace it. (did you ever look at your muffler? its like 3 ft by 2 ft...lol now i need to know what muffler sizes i need and crap like that.