New OEM ej257 is $1800.
google, "got some new stuff for engine R&R" you'll get my thread.
That will give you the idea of what you need to do.
174,000+ miles, 5/20/12 new ej257 short block, 8/20/11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. Also CHECK YOUR OIL, these cars use it.