G42-1200 base price is shown as a Supercore. 
 
Use the pull down menu to select the turbine housing if required, making it a complete assembly.
 
879779-5001S thru 879779-5006S corresponds with G42-1200C, compact compressor housing.
 
Contact us for any guidance on the application of this turbo. 
 
Check out our fittings page for getting this turbo plumbed properly into your project car.
 
If you need to change rotation spec and the menu does not show, refresh your screen by pressing F5