UPDATE: **SOLD** Was $4000.
The FC-170 appears to have been a dually.
“2 60s FC170 and 150 The 170 has a small block Chevy in it with the adapter. The 150 has stuck motor in it don’t know much about it. Serious inquiries only will not answer to is this still available. Feel free to ask me any questions and I can send more pictures upon request for serious inquiries obo”
The riser for the speedometer isn’t the sheet metal that the duallys had. Maybe it has a dually master cylinder and someone made a DIY riser.