I have shaved door handles on my '67. I dont use a kit, I just leave the wing window unlocked and reach through to get in.
At the track I have bright yellow nylon cord attached to the inside door handles. They hang out the wing windows so that track personal can open the door from the outside incase of an emergency.
I believe the rules state that door handles are not required,but track personal must be able to open the door from the outside.
Brandon