Go to the miata.net forums... thehy'll tell you there... it's redunculous. It's much cheaper to do it yourself. if you have a beater car, I'd say go for it. If you just work on it on weekends, they say it's about 6 months. But this is something that can range from 40-160 shop hours, yeah I know it's vauge. But 40 if the shop knows what it's doing, 160 for the average shop. Most charge 80 dollars an hour, so it's 12 800 in total. If you can't do the swap yourself, it's much cheaper to buy one yourself.