I have a nice 90's MIA Jazz 5 string neck that I am planning to buy a body. I was going to but a MIM body but may hold out for a MIA or a custom made. My question is can you add "String Through Body" to Fender body? Is it an expensive modification? Is it worth the trouble? As anyone done this? I do notice the difference in sustain on the Fenders that I own that have "String Through Body" but sometimes that is not wanted. I still like having the option. I am think that I can take this slow (used MIM body) and on what I need without spending a lot up front (MIA or custom body). Thanks!