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A "bolt on boy" is a mechanic in someway. He can bolt things on but doesn't truly know what the parts do and how they work. You can almost relate a bolt on boy to the local oil change technician. There is a difference of a performance shop and a racing shop. Performance shops buy parts from online or magazines and install them and that's it. A race shop will search for parts that suit a build, determine what parts are needed for the type of performance, and understand the fundamentals of performance.
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