I have a '95 Bonneville, like the one seen here:
It has the 3800 Series II V6 (naturally aspirated

) with MSD ignition coils and my own 4" Al cold-air intake with a K&N filter on the end. It came with Buick 6 spoke alloy wheels which was kinda funny. I'd guess 200 HP, may be a tad more on a cold day. It's fast enough for me so that figure can't be far off.
My custom intake make a really cool whistle noise that rises in pitch with rpm and makes the car sound turbo-charged.