Aftermarket 308 Radiator?

Hello group.

This is my first post. I have a radiator problem with my 1984 308 QV and I was hopeing someone out ther could help.

The original radiator in my 308 keeps cracking. I have had it fixed a few times but it always cracks again. I want to replace the original radiator. I would like to purchase an aftermarket 308 radiator. I know nicks forza sells them but at $900 they are too expensive for me.

1. Does anyone know of companies that sell aftermarket 308 radiators cheaper then $900.
2. Will the radiator from anyother other car work? I would like something that is a direct drop in replacement.

Thank you for your time.
Andy in NJ