Not really sure what could be added, stolen checks we're added for this reason.
You can mug people, sell suits, sell car wl, sell guns, racket bricks & other player markets, its really just what you make.
(I bought a actual human skull off someone for 10k at a food truck)
If there we're some ideas to go along with this thread, it would be helpful but a chopshop would just get hella abused