Consensus protocols are the foundational pieces to blockchain systems, enabling agreement across distributed nodes without central authority as they ensure consistency, fault tolerance, and decentralization. Among these, Proof-of-Work (PoW) and Proof-of-Stake (PoS) remain the most prominent paradigms, each influencing system performance, energy efficiency, and security differently. However, simulation tools that allow side-by-side evaluation of these mechanisms are limited in both availability and extensibility. In this paper, we extend the SimBlock blockchain simulator by implementing a runnable PoS simulation environment alongside its native PoW setup. This includes stake-weighted validator selection, coinage-based difficulty logic, and per-block runtime logging. Our implementation allows researchers to compare PoS and PoW under consistent structural conditions. The contribution not only enables direct benchmarking between energy-intensive and lightweight consensus models, but also lays the groundwork for future research on scalable and efficient consensus protocols.