It's level 1 model in your netlist, not so complicate, en. You can just use Level1_Model from ADS, then modify the parameters' values.
But if for Bsim3 model, for example, it will be so complicated using this methods because there are so many paramters needed to be filled. Device models are provided from foundry in Spice format, Cadence format, ADS format, etc... for different simulators.