I built it myself out of a piece of 3"x5" rectangular tube steel and I used my original end caps. I wanted something that looked close to stock, but much more substantial that bolted straight to the frame rails.
87 4Runner
Here's a few pics of my 16yo son's first truck. It's been a year long project and was a basket case when we got it. Now we're looking for a soft top to enjoy this summer.