The lock actuators can handle going less than their throw, but some cars are pain in the butt. Done a lot, c3 corvettes are all sorts of fun. 1st gen mustangs are bad too, since the door panel is so tiny. Seen a guy duraglass a bracket to the sheet metal.A few years ago I started a power lock installation project on my Corvair. I ran into some similar hurdles that they did - and I immediately shelved the project and haven't gone back. The solution they have in the most recent video is amazing and brilliant - and I think it's convinced me to never try to install those again. I could never justify the time it would take me to fab all that up!