In fact, I was thinking about doing something similar myself, but I want to do a complete conversion - keyless ignition, but still being relatively secure. Actually, the ideas I have may be more secure than the keys, any muppet can stuff a screwdriver in them at the moment.
Well My car used to have one of these fancy alarm systems on it with remote start but the last owner must have got attached to it or something because he removed it before it was sold to me. (yes that means more messing around in the wiring loom) I'd be very interested to see what you have planned in this respect.
Jamie, can the posts re: this be moved to my car's project thread? keep this one on tipoc?