find someone who does not do flat rate. flat rate is great for the tech/ mechanic but can often jip the customer by charging a job for so many hours, then doing it in less time. being this is custom, your going to have to find a shop that will do custom, driving up to the local mechanic and requesting this work, is not the answer, some sort of a speed shop or custom fab shop is your only option in hiring out the work, an aupolstery shop could put the seats in probably, but that's it.