2007 subaru wrx sti engine swap
So I've got a 07' sti. Intercoded piping, straight pipe exhaust, stage 2 Cobb tuner, rebuilt tranny >20k. Engine is stock, I'm guessing the EJ25? Question (problem) starts here...Oil has been spewing into bay, thought it was a bad HG. But come to find out its the crank case and bad piston ring on cylinder 4. Oil leaving the dip stick. What would my best route be? Just scrap engine and upgrade to something meaner, or better saving money on rebuilding current engine? Please, any help is appreciated.

