Question about acount tranfer from Xbox to PC

First time posting here so forgive me if i make any mistakes plz. But i heard that the XM1 (Chrysler) was only available for console and that the XM1 (GM) is only available for PC. My question is if i where to buy the Chrysler before i transfer to PC would 8 be able to keep it? And if so would i be able to buy the GM when im transferred so that i can have bolth?