So you have a plastic aluminum radiator or a copper? If it's copper it's worth the money to have to recored. If it's aluminum/plastic then just get a new one.
I pulled a 2 core out of a wreckes car and had it recored. Rad was free and recore was $100.
Blinker fluid has gone bad or leaked out and isn't conducting a proper ground causing a back-feed through the seatbelt control module warning lamp. Fix the leak and fill it with the proper ratio of DOT3 and water.
GD
No.
No.
Install a 95-98 EJ22 intake manifold onto the 93/94 EJ22 and then it’ll plug into your 99 Outback.
You can also consider repairing whatever is wrong with your EJ25. If it’s just oil leaks and the EJ22s have insane mileages like many do the risk/reward might favor repairing what you have.