Then it was time to start reinforcing the body and building the cage. Being that the truck is still a four seater, and my daughter will be riding in the back, I wanted to make sure it was more than strong enough. For the upper horizontal support I went with square tubing, as it will make building a rear bulkhead and installing a rear window easier than round tubing. Being that this is the backbone of the cage, and only inches from the seat back I used .188 wall (3/16") 2x2". Yes, it's overkill but for safety reasons I feel better and it was only 8 pounds heavier than .120 wall (1/8"). Before welding it in the truck I installed slugs that will accept the rear tube work, they go all the way through the tube and are weld on both sides, along with inside the tube (where I could reach). I also welded some 2” steel strap that goes towards the front of the truck all the way to the door opening, this will give the couple inches of sheet metal some more support and protect the rear seatbelt retractors.
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Then I was able to cap the rear of the fender and body.
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And just like that I have 3/4Runner
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