I use Cobra / Vodafone tracker on my GTR, it came factory fitted, just paying subscription every year.
I have one of these which I bought for the drone, but never had time to use it, drone is now sold
https://www.amazon.co.uk/TRACKIMO-Universal-Tracking-GPS-Device/dp/B00QSHHH0A
https://trackimo.com
Could be good for tracking the car, app, lots of features etc.