Both are nice cars, the Olds is geared more for a softer, more luxurious car. The bonneville is more of a "muscle" car, and rougher. I guess the bonneville is more of GM'* sports sedan. Both similar but a couple differences.
Pete, one large chambered muffler will be better (like 92-99) for sound, if you want a deep american muscle sound. It reverbs better, and the mufflers are bigger. I haven't heard jim'* aurora but i do know some dual muffler systems can be sweet, and i know his is from what you've all said. I know that older vipers with true dual exhaust systems, with no cross pipe sounded like complete butt. It sounded like an inline 5 on each side, and therefore kinda icky and high pitched. The new vipers have the side pipes again, but they cross and exit out the other side, kinda likea very flat X pipe in the rora'* bonnies. X pipes help the engine as well, and generally are the best power producers.
I know both 00+ Bonnies and 00+ Rora'* have an x pipe and you shouldn't remove it...
'06 Vee Dub GTI 2 door Tornado Red
- 2.0 Turbocharged, Intercooled, Direct Injected, 6 Speed DSG, Underbody Aero, 17" Classix
- Moonroof, Bi-Xenon headlamps, Interlagos Plaid Sport Seats, 6 Disc In-dash, iPod integration, GTI Monster Mats (winter)
'93 Bonneville SE Purple Pearl H4U package - picked up June 23, 2003, Traded-in June 28, 2007...