Virtual reality and metaverse technologies hold strong potential for engineering education, particularly for improving spatial understanding, experiential learning, and collaboration. Yet most implementations remain confined to isolated pilot projects that lack institutional alignment and long-term sustainability. Existing research focuses mainly on single-course case studies, leaving a clear gap in scalable approaches for faculty-wide integration. This paper addresses that gap by presenting a structured, top-down methodology for adopting immersive technologies across an engineering faculty. The proposed Faculty-Level Integration Methodology (FLIM) follows an iterative three-phase process of analysis, design, and validation. The framework is supported by low-cost infrastructure and reusable open-source applications. Results indicate strong motivation among faculty and students, reveal key barriers, and identify opportunities for sustainable institutional adoption, including future university-wide scaling.