When I asked if I could just get the proper hub all he said was the right kit for my application is ATI917122E so I am thinking the difference in the dampers’ construction may affect pulley alignment.
Also, I am doing this in preparation to install my BDS 871 blower set up so the stock alignment is critical so that my belt alignment is true.
Damper 917122E is a 3-ring damper and ATI says, "Note (12) Not an OEM replacement for stock pulley location."
The pulley face dimension is (2.130-0.190) = 1.940" (compared to the damper for stock pulley location 1.630")
