Some progress.
Added .064 pans to the chassis for a total body/chassis weight of 97g.
Predictably, it's got a more planted feel. Loosened the motor pod at the back. Not as fast a my flared Mini pick up but pretty good.
For sure, the look's transformed. Not better, just different.
Modelling (cockpit opening, driver figure, rollbar) and paint are next.
As for making bodies available, I'll think about it.
Dan