Boostfeen on Rennlist has a good S engine with @ 125,000 miles...
$850 complete for sale....might be cheaper to snag it than rebuild...you could sell off the good parts from this one too to recover.
My guess is a valve job etc might run up to $2500 on a full rebuild.
IIRC shipping across US would be $250...just throwing this out there dude.
GL.
EDIT...WOULD BE CHEAPER THAN A REBUILD...carry on.