DIY 400w SON/MBI gearbox: Internals

Showing the inside of this little gearbox that I knocked up for testing 400w SON and MBI/CDM lamps on.
I've used a Parmar HSJ40223221 choke, a Laytron IG-051-2 superimposed ignitor and an ICAR 45uf PFC.
I've even gone to the effort of using ferrules in the conductors going into screw terminals lol.
Illuminated switch is double pole. All wired in tri-rated cable, just because.
The casing reverberates when the lamp starts and it sounds awesome but soon quietens down to almost silent when the lamp runs up.