Cecco Racing is the source for the Rear Bumper, Shackle Mounts for the Front Bumper, and Skid Plates. You might ask about the Tire Carrier with Gas Can Mount. I did not see one, but they might fabricate one.
I had my front bumper fabricated from 5 Inch C Channel. It is a 42" Stubby Bumper. The end plates hang down an Inch to keep a jack from kicking out from under it.
Winch Plate was from Diesel Freak. Rough Country I believe.
12,000 Winch from Harbor Freight, as well as the source for 7/8 D Shackle's for all Four Corners. Also a good source for Soft Shackle's and Snatch Blocks. NOTE: Get the Apex Forged Snatch Block, and not the $29.99 one. The Apex is better made, has a grease zerk, and is also much handier to disassemble to clean. It is $20 higher, and worth it.
My 42" Light Bar, and 6 LED Rear Flood Light are also Harbor Freight. My Interior lights are Harbor Freight Rock Lights. One under the dash, and the second on the roll bar.
All Switchs are from Rocker Switch Pro's.
The Tauler Jack Kit from Brennan's Garage is also something to look into.
My first improvement was swapping the factory tires for 235/85R16 10 ply rough tread tires.
I have a Jeep YJ windshield in my Roxor. My Top is a Fortress with the rear dove tail, and my Rear Bulkhead is a Hard Cab from Diesel Freak.
NOTE: You can do the modifications over time. I have been perfecting mine for a couple years now.
Bob R