Mirage Spark plug Recommendations:

(low boost=6psi-13psi high boost=14psi+)

Brand - type - part# - stock# - gap
4G (1993-1996) 1.8
Standard:
NGK V-Power BKR5E-11 # 6953 0.044  
Turbo (low boost):
NGK Standard BKR6ES-11 5553 0.030 (2004-2006 Nissan Maxima 3.5 plugs)
Turbo (high boost):
NGK Standard BKR7ES-11 2387 0.028 (Marine/Motorcycle plugs)

4G (1993-1996) 1.5
Standard:
NGK V-Power BPR5EY-11 6937 0.044
Turbo (low boost):
NGK Standard BPR6ES-11 7133 0.030 (1990-1994 2.4 Might Max plug)
Turbo (high boost):
NGK Standard BPR7ES-11 7226 0.028 (1983-1989 Starion 2.6 turbo plug & 2005 Lancer EVO)

5G (1997-2002) 1.8
Standard:
NGK V-Power BKR5E-11 # 6953 0.044
Turbo (low boost):
NGK Standard BKR6ES-11 5553 0.032 (2004-2006 Nissan Maxima 3.5 plugs)
Turbo (high boost):
NGK Standard BKR7ES-11 2387 0.028 (Marine/Motorcycle plugs)

5G (1997-2002) 1.5
Standard:
NGK V-Power BPR5EY-11 6937 0.044
Turbo (low boost):
NGK Standard BPR6ES-11 7133 0.030 (1990-1994 2.4 Might Max plug)
Turbo (high boost):
NGK Standard BPR7ES-11 7226 0.028 (1983-1989 Starion 2.6 turbo plug & 2005 Lancer EVO)