A body manual trans pedal setups

Can the 67-76 clutch pedal assembly's be used in an early a-body? I'd like to use one of the later clutch pedal assembly's if possible for the integrated clutch pedal "safety switch" bracket as well as possibly find what I understand to be a HD roller bearing clutch pedal version in the 340/383bb 4-speed cars.. Can anyone help me out here? Will a later pedal assembly fit, and if so, does anyone have one available? Thanks! Just to be sure I'm being as thorough as possible I mean everything included in the assembly from the actual pedals down to the bracket that hangs them and connects to the firewall and the dash. I'm also aware the later models had a different bolt pattern setup to mount the master and that is not a problem. Also, I would like to use the 67-up gas pedal in my 66 dart as well, does anyone have any experience with this they can share? Pictures?

Thanks guys, I appreciate the help!
Ryan