225 Slant Harmonic balancer

Looks like a damper with the power steering pulley bolted on the front.

does your car have power steering?
If so that front pulley hub is bolted to the crank damper. You can remove the power steering pulley and re use that by bolting it to the replacement damper.
Note: the timing scale used on the slants moved from the left to the right side of the damper over the years. So although the dampers will fit, they may not have TDC marked correctly. It is wise to get the correct damper, wiser still to use a TDC tool to verify the damper is reading correctly.