no matter what at the end of the day the car/truck is what it is regardless who built it or who paid for it....alot of guys who compete are installers or even customizers if they get a customer who wants to compete why shouldn't they do it? why should the car owner be frowned upon for not doing it themselves? some may not have room for $800 in tools or even the space to work in and they may also not have the time to do the work...its one thing to be a proud DIYer and quite another thing to pass off judgment for those who aren't. that is sorta like saying you cant like race cars because you cant wrench or don't drive 185 mph, or cant like a sport because you aren't a professional level athlete.....