New members here trying to put back together a truck we didn't take a part wink

We believe this to be the original parking brake bracket to hold the cable at the frame end?
Photobucket album

We are guessing this actuates the original parking brakes? Can't figure out what else it might be?
Photobucket album

If we are correct, we are planning on removing all of this and installing a line lock to replace the parking brake, any reason I shouldn't do this that anyone can think of?

We also have this contraption that we are guessing are related to the original pedal assembly? Again, planning on removing and replacing with more modern equipment.
Photobucket Album

Hoping we linked the photos correctly chug
We really appreciate any insight.


Michael
1954 Chevy Truck in process of completion