those with good memories my remember my post aboutthe angle of rear fog/reverse lamps (off Land Rover) and possiblilty of modifyingthe plastic case.

In short, not possible due to dept of the reflector.

I think I know the aswer to this but I guess fitting a pair of aluminium brackets like these

is an SVA no-no due to sharp corners perhaps?

If you can radius them to 2.5mm or more then they'd be ok. Possibly using some edging strip of some sort?

I bought those cheap square lights (fog and reverse), mounted them on long threaded bar to get height correct and simply bolted some flat plate from bottom of chassis that extends past back panel. All radiussed and then covered in some large split hosepipe type tube. No brackets and holes therefore required in back panel in case i get some better lights in the future.
Rescued attachment rear lights 1 may05 resized.jpg

why dont you make some out of fibre glass as i see your gona be mixing some up anyway