best mobile antenna

Hello, I want to add Ghost Mobile Antennas to my vehicle for my Uniden 336HP. I’ve looked a lot of places and cannot seem to find the correct one. If anyone has any suggestions, it would be great. Would need to know which antenna, mount, etc. Thanks!

Rode my BCD-535HP with a GPS connected to it to try location based scanning last Saturday (July 30th). Bought a Larsen LARSEN model NMO-150/450/800 from HRO, put it on a spare mag mount and put that on the roof of my car. Best $29.95 I've invested in scanning ! Had the range set to 15 miles...