Following this thread.
I'm in the process of building a smaller scale buggy for my son, I've bought 3 "Suzuki" platforms, and have been working on my mobile chassis table so I can roll it around my shop..
Small and light is the key for me as well, I'm hoping he can use in up until the time he's legal to drive.
Final drivetrain is out of a 2001 tracker, 2.0, auto and case, rear axle out of a 1996 sidekick with factory 5.13's, front sami axle with spacers to match the rear width. I bought a set of 33's to get him going, but I'll build it for a larger tire. Links and air shocks all around.