I had installed an 8-3/4" dia. Bendix dual-diaphragm booster in my '69 F100 Ranger last week. I got the booster (core) & firewall bracket from a 1975 Ford F350 1-ton truck.
It had the plastic tube between the back of the booster to the firewall. The rebuilt booster I got from O'Reillys came with a rubber boot. I took the rubber boot off and reused the plastic tube.
My '69 F100 Ranger as it currently stands:
The general idea of what my F100 will look like after I go through the truck:
Steve http://www.fordification.com/forum/view ... =1&t=66328
1969 SWB F100 Ranger. For now, stock 240-6, C-4, 3.50 single track and a power brake booster from a '75 F350 1-ton.
1968 Mustang. My high school car. Owned since 1982.
2003 Mustang Mach1. 11.03 E.T. @ 96.73 MPH in 1000'.