The first one is an original Santana Junior apart from the tyres and rims.
I threw out the originals the other day. They where quite ugly and mounted with foam tyres.
The Next one is the Santana MKII wich has CVD front shafts and additional cooling on the motor plate. The car is not orignal - When i recieved it, it had hotshot hubs and red knuckles. I´ve replaced those with Kyosho optima hubs and alloy knuckles. It´s missing all the shock absorbers (the ones fitted is just for fun) I´m going to put some Kyosho Plastic absorbers with alloy top ring on it. The front belt is missing aswell and since the chassis and suspension arms doesn´t show sign of wear, my guess is that it has been a parts car. Wheels are not the originals

http://www.rcmagvintage.com/reviews/retro/voitures/electrique/musee/mrc/mrc.htm