It depends on the engine, trans, and gear ratio given from the factory. Is it bone stock? 3.8 N/A? Supercharged? The */C guys can become fast relatively easily.
SCCOA.com has a list of super coupes running anywhere from 16.2 to 10.6 in the 1/4 mi. Most being low 15'* and high 14'*(mods unknown). Stock 4.6L run anywher from about 15.5 to 17, depending on the driver of course(96 and 97'* were on the lower end). We won't even bother mentioning the N/A 3.8L. You could run a push mower down the 1/4 faster.... When I tangled with a certain 97 Bonneville SE, it seemed pretty neck and neck. Then he modded (only a little) and started outrunning me in a hurry. Even though I was chipped and had a higher stall converter. No he'* cammed and I can't hold a candle to him.
It'* a 3600+ sled with a fairly long wheel base. They are not fast until you make them fast.
P.*. I'm an ******* on the road. I drive the speed limit and will sometimes make it hard for you to get around me. I also don't take kindly to people riding my *** because they think they need to arrive at their destination 5 seconds sooner than they would driving the speed limit.
P.*.*. Boosty, I can only *** u me you're talking about me. I'm flattered