The camera was fairly easy to pull apart, the only hassle, was cutting and rejoining the pigtail as it has to go through the gland on base of the the lamp. (Solder and shrink wrap).
I also replaced the lens with a 19mm to make the framing much tighter. I was expecting more issues with the quality of the plastic front to the lamp, but it was fine. I removed the IR illuminators as I didn't need them.
(I'm currently using the camera with OpenALPR, and hope to upgrade its hardware later this week to an old Dell Optiplex 7010 with GPU acceleration via a GTX 1050.)