Check out a NanoHood , I used these with my UVB150s for BTs and UVB200s for CBDs.
http://www.exo-terra.com/en/products/compact_top.phpI simply remove the reflector , drill 2 holes that are larger than the selftapping hexhead screws , and small pilot holes to screw into for the mounting in the ceiling / lid of my timber tanks / plastic rearing tubs , screw to lid using a powerdriver , replace the reflector install the uvb bulb and it's all done , a bit of cloth tap holds the cables from drooping.
The Par38 incandescent spotglobe can be used naked ,or simply install with a reflector dome around it if you want a more focused beam of light and heat. I use a glow dome from a clamplamp fitting less the clamp but others might have other ways of doing this . I am pretty lazy so I simply hung the ceramic e27 sockets with domes from c-screws.