I don't have one handy to do the figuring was wandering how possible/impossible it would be to use the body of a 4 runner just to behind the back seat then hack it off and put a truck bed to make a 4 door pickup on a 84 long bed pickup frame I do understand the bed would have to be custom made ect. I have seen this done before with the blazer/s10 combo and loved it i figure it shouldn't be to much more difficult to do with out trucks.

 

There was a guy on pirate 4x4 that did something like this. He had alot of time into the fabrication, I think he used 2 truck cabs and the rear seat section from a 4runner. It's alot of work, but can be done if you have the right tools and skills. I don't know if he ever built back doors for it, last time I looked at his build he was running some cool half doors/tube doors. Here's a link to his build thread:
http://www.pirate4x4.com/forum/toyot...b-project.html

PS: I had to go back and add a pic of his truck for inspiration, lol, I would love to build something like this someday!

 

Thanks I'll check it out

 

It can be done. Lots of people usually just make your standard "chopped 4runner", but I get you want a quad cab truck.
I've thought about how I would do this to an 80-series, and I might actually pull the trigger on attempting it someday. On mine though, one of my main reasons of completing a "truck-back" (instead of the bed connected version) is to splice in the rear window/hatch of a 3rd gen 4runner, so I can roll down the window like a Tundra

The pirate link from above is a pretty good build. This is a build I found very inspirational for a newer era truck, since I wish mine was build like it (3rd gen pickup) http://www.pirate4x4.com/forum/toyot...cab-build.html

Basically you take a 4runner and chop it part-way in the middle of the rear door jamb. Take a truck cab and keep the back end with a similar cut on the door jamb. Splice them together and you have a quad cab. For the doors, do basically the same thing and you have a custom width door to fit your jamb. How you resolve the glass is up to how you engineered it He definitely makes it look easier than it is, but in reality you're just splicing together two pieces of steel like any other welding project.

4runner front:



truck rear gets spliced in (notice they cut the roof, since the roofline of a truck changes height vs a 4runner):


Here's how you make the custom length doors:




mostly completed, unfortunately he didn't finish the build yet

 

I would also recommend you look at how people close up the cab on a truck that was previously a motorhome. Some make a custom metal wall, some use truck cab parts, some fiberglass it or even just screw some wood in there and call it good, lol.
Good luck!

 

go to Australia and bring a couple of them back like 85Toyman did. cool trip and you get a factory made truck.
See his up close is cool. Buying them there for what a used truck sells for here, transport fees are actually not that bad. Customs, that is another story..

 

have you made any progress with research? I am looking at a similar project, putting pickup on a runner frame, and curious what you found for differences in the frames