I have the HX35W in my 95 Ram 3500, and the H1C in the motorhome.

Are the compressor wheels and housings interchangeable?

 

only the exhaust housing, hx35 comp wheel is bigger, I changed to a 12cm quickspool ungated exh hsng without removing the compressor side and plumbing on the motor

 

So, that's even better - bigger wheel and housing.

Let me rephrse my question:

Will an upgraded H1C compressor housing and it's 60mm wheel bolt-in/clamp-in to the HX35 exhaust housing? Will the H1C comp wheel fit into the HX35 shaft?

 

you can put the complete hx35 compressor on the h1c exhaust housing, but the comp wheels and comp housings mount differently, and are different sizes

 

OK, I see it now.

The HX35 housings are held together by bolts; the H1C by clamp.