How come all my manual drum cars have disc master cylinders?

Minor Update

Years___Application_____________p/n_______Bore
1966... Fixed Ft calipers, Manual.....................1"
1966... Fixed Ft calipers, Power......................1"
67-70.. Fixed Ft calipers..............280 8600.....1"
71-72.. Fixed Ft calipers..............346 1178.....1 1/32
73-74.. Floating caliper, Manual...358 0146.....1 1/32
73-74.. Floating caliper, Power.....358 0112........15/16
1975..Floating caliper, Power......____0357
1976?......................................____4647..........15/16

H22A4 said

Not sure who is being asked for photos but here‘s a 75 master cylinder and booster.
View attachment 1716147348

View attachment 1716147349

Click to expand...

Photos and discussion of original production A-body Master Cylinders
https://board.moparts.org/ubbthreads/ubbthreads.php/topics/1895296/1.html
Example of a '74 358 0112 tag originally posted by @Dragon Slayer on moparts