Anywhere from $7000-$10,000
Locally there aren't many options, but many websites have tons of stuff for you. http://www.wheelsrims.net/pontiac-bonneville-inventory.html
You can replace the radio in a 2000 Bonneville with an aftermarket radio; however, the cost for the kits to make it work plus the labor could be cost prohibitive. The Bonneville's radio is connected to the computer. In fact if you replace the radio with an OEM, you still need to take the car to a dealership to have the new radio programmed. On top of that other electronic systems run through the radio wiring. Unless there is a very compelling reason, you would be better off to keep the factory equipment.
The question you ask is too involved for a proper answer. You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
The Pontiac Bonneville cost $5,000 when it was first produced in 1957. At that time it was a convertible and had many standard items that were generally items that were optional and that pushed the price up to the range that was similar to that of a Cadillac. The following year they removed many of the luxury items and lowered the cost to $3,000.
The cost to repair the brake lines on a Pontiac Bonneville typically ranges from $150 to $300, depending on the extent of the damage and labor rates in your area. If the repair involves replacing multiple lines or additional components, the cost could be higher. It's advisable to get a detailed estimate from a qualified mechanic for a more accurate figure.
250+
How does it cost to replace a head gasket for a 2000 Cadillac escalade
Cheap-it's a 5.00 part you can replace yourself.
£2.50 :)
More than likely, and, You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
How much does it cost to replace a radiator in a 2002 Pontiac Grand Am