I wouldn't buy that kind of stuff from eBay. I've watched those fittings shear off with just hand tightening.
You need to find out what oil line size, fittings, drain line size, etc are recommended from the turbo manufacturer and then purchase quality parts. Don't forget the water lines if your turbo uses them.
New Ride: 2004 SVT
'10 Ford Escape 3.0 V6
'86 XR4Ti ; 2.3L Turbo, 15psi
1988 F150 Custom
'07 ST ; formally bewst'd - R.I.P