Vehicles.ide line:
557,	monsterb, 	monsterb, 	mtruck,		MTRUCK_B, 	MONSTB, 	truck,	ignore,		1,	0,	0,		-1, 1.21, 1.21,		-1

Handling.cfg line:
MTRUCK_B      6000.0 20000.0 3.0 0.0 0.0 -0.1 200.0 0.80 0.80 0.50 5 130.0 60.0 25.0 4 P 7.0 0.60  0  36.0  1.0  0.80  0.0  0.10  -0.10  0.63  0.3  0.40  0.09  1899000  2028  1304445   0    3   20

Carcols.dat line (delete the original "monsterb" line and put this one in the "car4" section):
monsterb, 49,36,1,36, 49,127,1,49, 49,127,7,127, 2,8,2,8, 1,0,1,1, 0,1,0,1, 42,3,42,3, 68,68,68,68

Carmods.dat line:
monsterb, nto_b_l, nto_b_s, nto_b_tw
