That would explain why I was finding it so hard to find details anywhere for it! To my amateur eyes the the chassis, springs and gearing etc looked to be in good condition. It was the motor, esc and servo that looked a little tired.
That being said replacements for these should be relatively easy to source, that is as long as I don't try to replace 'like for like'?
I would no doubt use the Losi for bashing with my boy down the park and reserve the Predator for special occasions as you said.
I had a sneaky suspicion it must be quite rare so it's nice to have it confirmed