How can I replace car parts?

I have some car parts like Fog Light, muffler, Bumper, and Antenna that I want to replace on my car If I buy the parts myself can I have someone like a mechanic put them on for me at the auto shop?|||Well Crystal mechanical shops like to sell you parts themselves for several reasons the main one being profit. However times being tough and all many will let you bring your own parts. Call and make them aware of your wishes before taking your car in. One thing to remember though is if you supply your own parts most shops will not warranty your repairs and you need to make sure the parts you bring them are the correct ones not always an easy task. Hope this helps.