I know everybody has a few so please add them.
I'll kick off with a few of my ideas. These are what I would do with A, lotto winners money B, Far more engineering skills and C, lots and lots of time.
Discovery 3 chassis and air bag suspension with factory rear locker and traction control.
Ford/Mazda 3.2 5 cyl motor and 6 speed manaul box.
Wrapped in LR series 2a bodywork.

Jimny beam axles and coils under a Vitara 3 dr body with power from a 3cyl Ford eco-boost motor. Manual box from a toyota gt68 (only small rear drive I could think of)

Early hilux double cab body, tube space frame with coil over rear and Dana 44 or stronger. RWD only. Custom front arms and drop spindles. Crazy v8 like a Maserati or TVR flat plane crank. Motor set back as far as poss or offset like a Trophy Truck. Road legal

Well that's a look into my twisted imagination
