Thank you Sir.
Yes there are Tigers with manual tranny.
Newer models are Vigos (2004/5 onwards) not Tigers(2000-04) and yes they do also come in manual transmission.
Grip is excellent for offroad. The Mud Terrain tyres are ideal for almost any kind of terrain, provided you deflate them for snow and sand.
No issues with stablility. However after 100km/hr, I would recommend having a set of All Terrain (AT) or HT tyres for better road grip for daily/highway driving.
All Hilux models owing to their light weight can be tricky at high speeds which is why it recommended to have sand bags or any other weight at the rear for better handling at high speeds.