I have a vid on youtube with my exhaust. I have 2 Flowmaster Super 44's on my Alero. The vid goes thru different RPM's. My Youtube name is Redogonyx. Just search that. Youtube doesn't work on some of the company computers
If you have stock exhaust and don't plan on upgrading the entire system, 2.25 inch is the stock size, if you are going to upgrade, do a 2.5 inch catback. Actually on the Alero, rear O2 sensor back

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33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
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