2000 Forester with shot engine. on 2000 Subaru Forester

I would like to swap the shot 2.0 with a 2.5. What is involved in doing this swap? Thanks for any help.

Asked by for the 2000 Subaru Forester
15 to 20 hours labour plus cost of parts.
There are no issues with the ECU or the wiring harness???
this is why plus cost of parts. engine is what $3,500.00 to $7,000.00 depending on weather salvage, rebuilt or crate replacement. there will definately be some modifications to wiring and sensors. regardless of parts cost the time of labour should be the same.
is best to talk to your mechanic about budget.