Yes I mount the rear winch either up or down depending on how much room you have between the frame and bed of the truck. I can use the same one for both. I am out of 3/4 but I have a 4x10 piece of 5/8. I think it is really good enough. If you want I can weld a piece of 1" angle down the middle like a v which will definitely stiffen it up. That saves $30 of the raw cost of the steel just for the plate.
This is a frame extension for the 939 with all structural mounting bolts. Colors are Tan, Black, Green, or Brown. If you don't specify I just prime them black.
You will need to drill one addition hole in your frame for top/bottom torque control bolts. I send instructions.
Plates are in various sizes and patterns depending if they cover the bottom of the winch extension or not.
Includes:
Structural bolts, washer, and nuts that connect the plate to the frame extensions.
Grade 12.9 socket head bolts with lock washers for mounting the winch.
I use to use just frame rail under the truck but it can catch things and was harder to mount than plate. Also I can set the plate inside the rails so the frame is holding the weight all the time and not the bolts. It is also easier to set the winch in there than having to use jacks or clamps to hold it up while you bolt it in. Winch and plate are around 230lbs. Not easy to hold over your head! Just mark the holes first with the plate as a template, drill them, then put the winch / plate in place and bolt. Safer and easier to do than the picture below.
I am working on a full gusset plate to go under and across the entire stock 5 ton bumper. This protects from bottoming out in the mud and increasing the ramming ability of the bumper. It also allows for a angle skip plate to go under the bumper to deflect unwanted objects and add protection for the air brake system components. I am making a top gusset which will have a access door for the winch spool control. It will use some 1/4" diamond plate so you can stand on the bumper / mount goodies / vices / etc. It will look awesome when done. I should have that done in a couple weeks. I have 2 mrap rg31 / 33 bumpers I am welding together to make one massive front bumper for a truck. When done I will work on mine again
Forgot to mention you have to cover the hole in your bumper with a fairlead mounting plate. I just made armored bumper plates that are cut for the farilead out of 3/8 AR500 I will do the layout and cut out the mounting plates and a few fairlead plates! I have 6 installs so I have to get cutting! Running out of winches fast. I have sold 618 now! I got 28 more on a destruction bid. Some look brand new others make great rear winches since they have a few scratches. Not bad actually. I didn't get as good of a deal this time. These are getting harder to find in great shape.
I also make a 4/0 wiring kit 2- 16' (3/8" lugs) and 1 - 24" (3/8" 5/16" lugs) + 350 amp continuous battery disconnect switch + shipping for installing in a deuce or 5 ton. I can also rig a slave receptacle so you can power either the front or back using your slave cable. Usually I can ship the winch, mounting brackets and bolts, and wiring for around $240 freight on average.
As a note, I put Severe Duty 18's on land cruisers that were used in a Amazon rain forest crossing. They were nice imported 24v diesel Toyotas. They loved them! I just want a Toyota Hilux (the preferred military vehicle of our enemy)!!!