who can I find to change my spark plugs?

So I use torco octane booster regularly given I only get 91 octane pump where I live and have no access to race gas. I have 8k on the clock now and anticipate the plugs turning orange quite quickly. I would like to change them every 15k or so to keep the spark going strong since I have read the orange coloring does not effect function unless you go very long times without changing them.

Problem is I do not want to go to the dealer obviously! Can any indy shop be able to do this if I provide the spark plugs quite easily? Or is this something I should be finding a really reputable and skilled shop?

I would suggest just doing it yourself. It'll be fun, you will learn about your car and save money!

http://www.m3post.com/forums/showthread.php?t=471690

Spark plugs are a pretty easy process. It's probably faster to do it yourself then it is to find a place to take it, take it in, etc.

Just a spark plug so any indy shop can do it. Its not like the N54 from the 335s where you need some sort of socket or something.

Why change them every 15k? That's a bit excessive unless you are supercharged.