OCA1 thanks
I´m not sure what to do with that titanium and springsteel chassis, but I think not using for building the cars. Trying to keep the cars as close to original kit as possible. But this rear pod is really strange, actually looks similar in shape to a RC300 pod but then it´s much longer and positions of holes and cutouts are different. I will be interested if someone has seen this before.
Seems I have most parts for building a RC300 and RC100. For the RC200 some parts are missing.