When I bought my house I swapped my flowmaster 44's for stock mach 1 mufflers so as to not annoy or inconvenience my neighbors as the garage is behind the house (driveway between houses).
Now that I've lived there a few years and gotten to interact with the neighbors I can safely say that this decision was 100% not worth it. Think I need to go back to the 44's, or straight open headers.