* Same Engine: This is the most crucial factor. Both Probes must have the same engine (the KL-ZE). If the donor car had a different engine, the turbo won't fit.
* Condition of the Turbo: A used turbocharger's condition is paramount. Internal damage or shaft play will render it ineffective, regardless of fitment. A thorough inspection is necessary before installation.
* Manifolds and Piping: While the turbo itself *might* bolt on, the exhaust manifold and associated piping are specific to the engine and year. While the turbo itself may fit, the connecting parts may not be compatible between even two same-year models. Some minor modifications might be needed.
* Internal Differences: Even within the same engine model, minor revisions could occur during the model year. Though unlikely to be a major problem, there's a small possibility of subtle incompatibility.
In short, while it's *probable* a turbo from a '94 Probe GT will fit another '94 Probe GT if the engines are identical, it's not guaranteed. A careful comparison of the turbos and associated parts is strongly recommended.
