Adrian provided some details on a 1/3 scale jeep model he built from Toylander plans. He bought the plans in 2008.
https://www.adriantuckwell.co.uk/2017/03/11/i-built-an-electric-car/
The jeep now pictured on the Toylander website appears to be an improved version, as Toylander’s MB43 looks like it is more jeep-like. Prices vary depending on how complete you want the jeep to be.