In this episode of Throttlecast, Grant sits down with Jim Florek of Monster Customs to talk about his journey from installing car audio systems in his driveway to building a leading custom shop in the Southeast.

Jim shares how he and his partner grew the business from a small startup in 2010—taking on complex jobs other shops avoided—to earning a reputation strong enough to attract celebrity clients and major opportunities. A key turning point came when they pivoted into government and emergency vehicle upfitting, scaling rapidly into high-volume production while maintaining strict quality standards.

Along the way, Jim breaks down the realities of entrepreneurship—building trust, hiring the right people, and letting customer relationships drive growth. The episode also highlights his passion for cars, from high-end exotics to nostalgic classics, and how that passion continues to fuel both his business and personal life.

At its core, it’s a story about taking risks, evolving with opportunity, and building a brand rooted in reputation and consistency.