These can be a bit of a challenge. Your drill bits will be useless, these are hardened screws. Method 1- Sometimes simply taking a new screwdriver with an unworn tip and applying a lot of pressure while holding the screwdriver completely straight will allow you to get them started. Once they are backed out a little you can grab them with a pair of vice grips and unscrew them the rest of the way. Method 2- Using a chisel or a punch and a hammer (don't forget safety glasses) try to dig into the edge of the screw from the side (see image) and get it started by rapping from the side. Then the vise grips. If that fails, it is time for method 3- Deploy Dremel tool. Don't try to grind the head off, using the fiber reinforced cut off wheel, simply cut a slot carefully into the screw head. If you did a neat job your screwdriver will fit perfectly, and if you plan on reattaching the lock, you can even use the same screws with the slots cut in them again, of course they won't be one way anymore. If method 1 or 2 seems to be working, once you get one or 2 screws out, take a similar regular screw and screw it in where you just removed the one way screw and tighten it down very hard. This will hopefully take some of the pressure off the remaining one ways making them easier to remove.

   You will have to order some special parts, no doubt (thick door kits). I just installed a pair of tubular Arrow deadbolts, one single and one double cylinder for a customer with 2-3/8" thick doors. The thick door parts were special order and took 6 weeks to get. The cost for the parts was negligible, it is the wait and finding someone to order them. The other choice is a rim lock like a Yale 197, and try to get the longest tailpiece possible for the cylinder, and that may not be long enough without brazing on another bit to lengthen it.

   It is my hope to continue to add new articles to this site, and your input is greatly appreciated. If you have a question related to locks or locksmithing, or can think of something you would like to see added to the site, let me know. The only areas I am staying away from have to do with specific entry and lock penetration methods, as this site is for the general public as well as for locksmiths. However, I am perfectly willing to write about a locks weaknesses. In this day and age of manufacturers going with the cheapest labor and materials they can possibly find, a product that was fine last year might be crap this year. I will pull no punches on issues like that. Unfortunately LockInfoGuy does not do automotive locksmithing, we have a specialist at our shop for that, so my ability to deal with auto related questions is somewhat limited. Perhaps in the future I will add some general automotive information. Due to time constraints, as well as general laziness, I will not be able to deal with everyones questions or ideas. I will try to pick one a week, or so. The questions selected will be posted to the site, please do not expect a personal e-mail response. As I have a lot more material to add to this site, the answering of questions will have be secondary, at least for the time being, but I will always be on the lookout for good ideas or questions to write about.