S14 rear quarter panels are identical for zenki/kouki models
78110/78111
180SX rear quarter panels are identical for all years that the 180SX was produced.
78110/78111
180SX rear quarter windows have the "180SX" lettering embedded in it.
S14 Silvia had 3 different rear wings in Japan. Zenki is identical to US rear wing, kouki and "Type-S Aero" are different.
kouki 180SX 3 piece rear wing is shown in this picture on the lower right hand corner.
S13 Silvia rear quarter panels + rear trunk are shown in this picture.
rear quarter = 78110/78111
trunk = 84300
the S13 Silvia spoiler on inquiry is the one on the right. the one on the left is identical to USDM coupe spoilers.