Gilson Signs in Santee has fabricated custom signage from Prospect Avenue since 1980, when the shop opened as West Coast Auto Striping before expanding into a full-service sign production facility covering vinyl, foam, metal, and acrylic lettering. Rally stripes, racing graphics, and custom pinstriping remain a core specialty rooted in the shop's automotive origins, with performance-vehicle clients from facilities including The Dyno Shop on Prospect Avenue commissioning livery packages that combine multi-color stripe kits with sponsor-logo decal sets. The expanded product line now covers channel letters, LED light boxes, office door and window vinyl, sign-panel replacements, and fleet-vehicle lettering installed on-site at the client's location or at the Suite B9 workshop. Commercial fleet and lot-signage programs produced at this shop include dealer window stickers, banner displays, and vehicle-identification graphics for automotive retailers including Toyota Certified Center of Santee on Fanita Drive. RV graphic installations apply multi-panel registration-cut vinyl composites spanning up to 40 linear feet per side, hand-aligned across slide-outs, compartment doors, and radius corners using wet-application techniques on Class A, B, and C motorhome shells.