ok I know how to mod the cars but when I hex edit the PSIN block and replace the old on the save editor and save it , place it on my xbox it puts me back at the flash back mission. I know it's the PSIN block/hex editor part that is messing up so can anyone screen share on a PC on skype and show me how to do it?

Also I thought duping cars were patched care to explain how to do the new way , because yesterday I tried the whole buy the same apartment you already have while your friend in the passenger but it didn't work sooooo?

Skype: biblical. (with the period)