Add this lines in these files

vehicles.ide

612, 	ferocius,	ferocius,	car,		FEROCIUS,	ZFEROUS,	null,		normal,		10,	0,	0,		-1,	0.80,	0.80,	0

handling.cfg

FEROCIUS     1500.0    4000.0    2.2    0.0 0.3   -0.15  85   0.7  0.9  0.52  	5 200.0 26.0 5.0  R P 	6.0   0.55 0 30.0  	0.8  0.08  0.0   0.28 -0.24 0.59 0.4		0.25 0.50 35000 	2800		200000		1  1	0				

carcols.dat

ferocius, 1,6

cargrp.dat

ferocius 	# POPCYCLE_GROUP_AIRCREW_RUNWAY

gtasa_vehicleAudioSettings.cfg

ferocius				0				101		100		0			0.899999976	1					8			1.059463143		1	0		1			0						29			0.0


For EML lights to works, you need have to install in yout GTA SA, these mods MultiSiren, SirenExtender and ImVehFt
You activate the siren or lights pressing H or you honk keyword






