This is what I want, but it is actually a bad design. PreRunners are heavily modified US style off road trucks to go Paris Dakar style off roading. Rally cars use roads, bad roads, but roads.
Most of the time PreRunners will be used also on bad roads, but the road can be even worse and by the looks they do have Truck Trial aspirations.
Except that's just steroids....
Therefore, I do suggest a different design.
Take an even older junk yard F150, to stay with the Factory Five beauty, but first use standard carbon fibre pipes connected by aluminium joints, because full carbon pipes cannot be bend anymore to strengthen the all stripped original chassy, molding the joints only to the chassy.
Than you choose a desired tyre size considering the most likely percentage of bad road, real offroad and trial use for the tyre profile.
To fit them you look for standard wheel base parts already fitting to the tyre size, from even tracktors, but use two shoks instead of the standard one. Best would be a Citroen DS oil shock system in which all shoks are connected that way balancing the chassy mechanically based on liquid dynamics laws in physics modifying the oil refil valve by adding a connecting pipe system. Connected liquits have all the same preassure at the same level and a balanced surface, you ride with three, if it all goes bad, but you ride.
Break upgrades by solid pipes and larger disc diameters having higher preassure, supercharging the engine and for offroaders required a changed transmission to finally create a glass fibre hull to give it shape will build the hardcore version of a Rally 1600 Kit Car class amateur league race car, that is a pretty beast.
