To install this (first you can backup your files), just drop the files:

- hud.dat to /common/data

- radar.img to /pc/models/cdimages

- frontend_360.wtd and hud.wtd to /pc/textures

- If you have Episode from Liberty City, drop the files from both TBoGT & TLAD folders to /TBoGT/pc/textures & /TLAD/pc/textures
 
Also, if you already have something modded in frontend_360.wtd/frontend.wtd or hud.wtd, replace map files from "manual replace" in your frontend_360.wtd (also in frontend.wtd from TBoGT and TLAD if you have them) using OpenIV, and radarringback file/files (if you don't want red themed for tlad, you can use the original black one, or how you wish) to hud.wtd file/files.