Can you replace a 3.0L engine with a 3.4L in a 1994 T100?

Yes, you can replace a 3.0L engine with a 3.4L engine in a 1994 Toyota T100, but it may require modifications. You'll need to ensure compatibility with the transmission, engine mounts, and ECU. Additionally, you may need to adapt the wiring harness and exhaust system to accommodate the new engine. It's advisable to consult a professional or a detailed guide specific to this engine swap for the best results.