Bottom end is the weakest link on the engine. It should handle the extra power just fine with proper oil changes, and proper amount. Once you go above the power the kit will provide you're pushing the limits of the engine. We are mainly concerned with the safety of the engine.
Chris actually the rods will be your weakest link. changing out the rods will increase the engines Durability so much more.
By the way Chris how are they determining whats the power limit of the 2.5? And what is that limit and what does it suggest? thanks