Holset HC5A Exhaust housing help.
 

Hello, I recently purchased a Holset HC5A turbo for a project I'm working on, and I can't seem to find a flange to fit the outlet of the exhaust housing. I have tried to search the casting numbers from the housings with no luck. Has anyone had issues with this? What am I doing wrong? The numbers I got off of the housing are 3691918, 32129, 01A1, and 13J13. Can anyone help me identify this thing? On a related note, does anyone know where I can find an air intake horn to fit a 6" diameter inlet tube? I'm dying to get this thing done, and out of my shop. Thank you in advance.

Air Horn/Velocity Stack
 

For anyone going forward who needs a big A$$ velocity stack, look no further than Universal Spinners.