Lego Technic modified 8258, 8043 and MOC-2273 - YouTube
my 8258 crane truck and all of its mods - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
Original modifications
Lego technic moc Crane Truck 8x8 - YouTube
This is my boyfriends MOC, based on a 8258, in white with 3 axles, 1st and 3rd axle steering, 5 outriggers, a pneumatic crane thats able to rotate 360° with 2 pumps