That's like dancing with a big girl. Sure you can swing her around the floor but she is sure hard to stop.
It is wider than a full size truck, tall to haul, you need a tall pintle mount and it has air brakes." towed with a duce"
I have seen several where the axle is swapped for a 3500 dexter 6 bolt, and a new tongue is made.
They drop down, stop with added electric brakes and look ok behind a Full size truck.
I would pass on the 105 and find a 101A2 or A3 they ride nice and tow well behind a full size truck.
First picture is a 105 behing a Full size Pick up
Second is a 105, 1102 and a 101A2 sitting together.
Third is a 105 with new axle behind a H1 looks nice and it sits well.