LTB needs min level 20. Crate events need level 10. And yes, if you have 2 L3 NCs, the best thing would be to get to Level 20 as soon as possible. But getting 2 L3 NCs before you get to L20 is a lot of hard core camping and needs quite some patience. If you've just started and don't have the Executive Coupe cost reduction mod, it would take even longerthan usual!!