M35 series 2½-ton 6x6 cargo truck
Weight

Model
Type
wheelbase
Empty Weight
Loaded Weight
M44
Chassis (single rear tires)
long
10,225 lb (4,638 kg)
-
M45
Chassis
short
10,524 lb (4,774 kg)
-
M46
Chassis
extra long
10,860 lb (4,930 kg)
-
M57
Chassis (single rear tires)
short
10,943 lb (4,964 kg)
-
M58
Chassis
short
10,441 lb (4,736 kg)
-
M34
Cargo (single rear tires)
long
11,775 lb (5,341 kg)
17,125 lb (7,768 kg)
M35
Cargo
long
12,465 lb (5,654 kg)
17,815 lb (8,081 kg)
M36
Cargo (long bed)
extra long
14,280 lb (6,480 kg)
19,580 lb (8,880 kg)
M48
Tractor
long
11,430 lb (5,180 kg)
18,780 lb (8,520 kg)
M49
Gasoline, tank
long
13,895 lb (6,303 kg)
19,245 lb (8,729 kg)
M50
Water, tank
long
15,184 lb (6,887 kg)
20,534 lb (9,314 kg)
M59
Dump
short
14,050 lb (6,370 kg)
19,400 lb (8,800 kg)
M60
Light wrecker
long
23,960 lb (10,870 kg)
27,810 lb (12,610 kg)
M108
Crane
long
19,375 lb (8,788 kg)
23,225 lb (10,535 kg)
M109
Shop Van
long
15,231 lb (6,909 kg)
20,581 lb (9,335 kg)
M275
Tractor
short
11,179 lb (5,071 kg)
18,529 lb (8,405 kg)

Question: How many Tractor variants were developed and what were their models?
Answer: Two tractor variants were developed, the M48 and M275.