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.
206,500miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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