These are lasd liveries for the 92' caprice, they also work for the 91' and some other models.
*download the livery and model
*use Open IV to open one of the .ytd files (whichever model you wanna use) and replace the current livery with the one provided
The model is not included, you can get it here (other models work too but that one is the best): NOPD Early 90's Police Cars -ELS - Vehicle Models - LCPDFR.com
It was made by Officer K Slimm, check out his profile he's done some awesome stuff :))