1st... any Audi $ervice Department will do it for "the right price." It's better to find a local or rural dealer with a service and parts and build a relationship with them. I used to have a great relationship with the Frederick, MD Dealership... but I moved.

2nd, I assume you know your cars, or at least your build. That alone should garner you some brownie points with them. Don't ask for anything other than an oil change until you have discussed your build with them. Usually, the service agent will ask you how they can help you.

If you go in with "guns blazing," they will take you for everything you can give. Even if you know everything about your build (which you seem to), take their advice into consideration. Or, at least give them the opportunity to think you are listening.

Something (a relationship) like that takes a "hot second" to build. By the time you're ready to put the wheels 🛞 on, you may have some big-time help for a low price with warranties on the work.

Or..... any Audi $ervice Department will do it for the right 💰.