rod bolts are weak
i would NOT push that engine above 230whp if it is completely stock. possibly even less if it has some mileage on it.
heres what you should be looking at:
mild re build (replace pistons and rods with forged stuff, re bearing, re-ring, hone (bore if needed), crank micropolished and new seals/gaskets all throughout the bottom end.
or
full build
re-sleeve, forged pistons and rods, new bearings, seals, gaskets, crank polished, bottom end balanced, etc
i recommend arp hardware in the bottom end (rod bolts primarily) and certainly head studs if you plan on things lasting longer than a few short pulls.