I ran standard rods on full zetec with a t34 hybrid running 20psi polished ported head grs intercooler etc and they never let go but were pushed to the limits when i stripped the engine to replace for steel and forged pistons you could see the little end of the rod discoloured through heat and thats where they will go, if your aiming for 300 or above i would recommend steel rods, as for crank the standard crank is very strong but will only take up to 400bhp.