LOL....the Toyota in-line 6s are awesome motors, for what they were intended for: longevity and torque at low rpms. Sure, you can swap in a small block, but a diesel would be better....small blocks are so much lighter than a 2f, that they change the feel and weight distribution, off road. If you need 300hp fj40/60/62, go nuts....but those 2/3F motors do EXACTLY what they were built for.....for as long or longer than anything ever made.