Just in case you don't want to reinvent the wheel................
I have a set of drawers in my 100 which I believe are a copy of the Outback Interiors drawers.
OUTBACK 4WD INTERIOR ACCESORIES Drawers
Shake rattle roll test more pics
I purchased these on chance before buying my 100. They cost me $330, when the OI ones were approx $1700.
They were being runout by a company called Red Desert, I purchased a set, told my brother inlaw and he got a set, mine arrived and I tried to buy some more and they were sold out. I then went to probably biggest 4wd show in Australia and saw someone selling them for $1200. They must have bought the rest.
I have included a pdf, I am missing a page but will try to find it. This design would be very easy to replicate.
(Just in case it's easier or cheaper than yours)
It didn't come with a fridge slide, but had all the holes punched for the extra bearings for the slide, and with a slight trim of the drawer the slide would fit in. (designed for this)
The top (12) is plywood covered in marine carpet (with T-nuts fitted for the tie down rails) and is screwed to the metal frame with round head metal threads which go into nutserts. The bearings bolt to the frame and the drawers slide in and out beautifully. The lift up panels (13) are folded gal plate covered in marine carpet.
The rest is folded gal plate with the centre frame (4) having a spot welded return on it top and bottom, so the 3 frame sections (3,4 & 5) all being made the same, minus the return on 4.
The drawers are folded gal sheet, welded corners with welded 2 x 1 approx RHS rails as seen in the photos.
I'll add this pdf with pics and details for a while and see if I don't max out my upload limit
Also as noted these could fit an 80 I believe with just a slightly different top and possibly the fill pieces at the side of the drawers(10). This would give you more sales and better purchase power to make them cheaper for quantity.