Turbo parts source

Im looking for 1 Holset HX30 turbine "split ring seal" or piston ring. Its the large one of 2 for the entire turbo, also 1 journal bearing. The rings are 35 for 2 and the bearings are as much! The whole rebuild kit is $35 shipped. Does anyone sell these seperately? Id imagine the ring as about .80 at a supply house and the bearing about the same but Im just guessing...or hoping. HX30 was on a 110HP '93 (?) 4BT Dodge Cummins. looks like same center as an HX40.