Received this 12 volt linear actuator in the mail today. I'm going to see if I can use this to open and close the hideaway doors on my 68 GTO. It has a 4 inch shaft that extends out when 12 volts is supplied. Reversing the voltage causes the shaft to retract. I should be able to accomplish this with a couple of relays. My car already has a rod connecting the two door levers together where somebody hooked up a mechanical style lever to open and close the doors, so I only need one actuator. Just need to figure out the mounting of the actuator behind the grille.