I have seen stock internals hit 200,000 miles, but there is never a guarantee, if you are rebuilding a new set of eagle rods for around $300, pretty cheap insurance. If you plan to do any future boost/nitrous, you would be a looking about about $450-500 for some forged pistons.

97 Talon ESi 14.943@91.35MPH N/A!
"If you need someone to provide an itemized build of materials and a flowchart to walk you through every build-related question you will need to answer at each step of the process, you shouldn't be playing with cars. "-Driggs