I did a CPP brake only kit on my '51 Burb. I remember it being pretty painless. Trouble free since 2012. Did a Kugel C/B unit in a '40 Ford with booster and both masters under the dash.. Worked great, easy to install. Have a Kugel in my '30 Roadster, have yet to use it but easy to install. Planning on a Kugel C/B in my '28, since I'm now sold on them.

I would think for a tall driver, the pedals can almost stay where they normally would be. Steering column and seat adjustment would be more of a consideration. Standard engine placement would stifle a foot well move. Where tall would have you move back from the firewall.