['56 150]

No box pic. snagged these off of ebay. trying to get an era correct unit for my '68-'71 era build. I appreciate all the help. thanks for reply. i have a single master cylinder, wasn't sure if this solenoid version was same late '60s era as the skinny shaw speed style, but different/unique because of it being listed for single unit as mentioned on instruction sheet. thanks again.