All services performed at my shop that are not tuning fab or motor build related are done by contracting with skilled people I know who may not be able to make a living doing their passion which could be doing wraps, or stereos. Nothing wrong with having a categorized group of parts to easily show a customer aka a staged kit. Not everyone with high performance car spends their day online or even wants to research parts and put together their own kit to have me install which is usually a pain in the ass. My staged kits include parts that I know fit well, are quality, and deliver the performance the customer is expecting with a parts warranty.