Turbo turbine housing question.

OK guys, my turbine housing on my turbo is cracked around the wastegate, pretty common I know. Now the turbo is a GT2860RS, can I swap the turbine housing for the one on my standard turbo which is in good condition as they are both .86 ar or are they both specific to the turbo they came off?
Paul.

They are specific to the size/shape of the turbine wheel.

OK thanks mate, looks like some thing else to add to the list of spares to buy then.