A competent radiator shop should be able to re-core it and repair the tanks if needed. or possibly look for a similar heater core that can be modified to fit
Problem is most people do not want to pay the price for a quality re-core or repair. They keep looking for the 29.99 Chinese junk cores.
The local radiator shop won't touch heater cores because they are tedious and time consuming. He pressure tests his work and they often spring new leaks and become a money pit.
Find a new shop, If the cores are leaking, replace them. No reason for them to leak after that.
We have ONE locally that really is a craftsman and his finished product shows it. Glen Ray may also be an option
And yes the 29.99 junk is just that.
