So you are at about $2000 for a used motor installed OR $600 for Jakes stud kit plus $600 labor ($1200). Sounds like an easy decision to me.
The rest of the engine is fine. The HG is the weak link. You'll find that the factory cross hatch hone marks will still be in the cylinder walls. Bearings and timing chains will last virtually forever.I bought the car non-running, so I don't know what shape the stock engine is in.