Looks like a later model b/e-body master cylinder ( '71-'74 ). I know the inlet for the tubes on the '71 and up b-body were to the outside unlike the '69 model year..


Troy
Houston Mopar Connection Club
'69 Charger Daytona 440 - auto - 4.10 Dana (now with 426 hemi)
'69 Charger 500 440 - 4speed - 3.54 Dana
'70 Road Runner 383 - 4speed - a/c (now with 440)