you cant thats impossible the next gen (PS4/XB1) vehicles do not exist on (PS3/360) unless u have a CFW then there are script hash codes that exist on old gen (PS3/360) (i believe thats what there called) that you can add to ur garage using a "Garage Editor" that allows you to change them with a keyboard using a mod menu in-game but they will only show up as "Downloadable Content Not Found" plus there invisible theirs nothing you can to make them visible since there only hash codes & if you get that error you can transfer some modded next gen (PS4/XB1) vehicles but not all of them i heard you cant transfer to next gen (PS4/XB1) no more due to the error "Transfer Failed Contact Rockstar Support" & if you contact them about the account they will know ur modding & ban ur account for breaking the TOS so the script hash codes are useless (Take Note: already tried transferring 2 modded accounts & even a new made account level 10 & has nothing but 30 days since its been created & they wont transfer & if you hear ppl successfully transferring to next gen (PS4/XB1) its another one of them scams i tried everything i can to transfer my 3 accounts)