Bolt pattern and torque for cylinder heads needed

That should have a 413 RB engine if it's factory stock. The bolts are torqued in three steps 20, 30 then 70 Ft Lb with clean lightly oiled threads in blind holes and thread sealer in water jacket positions. Pattern is attached. These numbers are for the OE steel shim gaskets or the coated steel shim type. For any composite gaskets you need to consult the numbers that they recommend.