Yeah it sucks that JL used the same casting for all 82-92 Camaros.They even did the IROC door decal placement WRONG for the collector series.
Some 3rdgen Camaro highlights bodywise:
82-83Z28s fiberglass hood,'84 didn't get one.
'84-86 some Berlinettas had the digital dash
'85 IROC intro,was a suspension quirk to the Z28s plus the decals,new front nose,hood w/louvers,new ground efx,new grid tail lights,16" IROC wheels
'87 LT coupes replaced berlinettas
'87 The convertible returned,absent since the 1stgen years.
'88 Z28 went away,IROC became its' own model
'88 sport coupes(which replaced berlinettas/LT)had Z28 bodystyle, had 3rdgen Firebird style spoiler(one year thing though sold 1st half of year went to 3piece spoiler later on)
'88 door IROC-Z decals were moved to back part of door
'90 IROC production ended early{late 89}(due to contract w/ racing series ending) so only 3k+ IROCs were made,revised dash gauges
'91 z28 returns early '90 with revised ground efx,high rise rear spoiler,and some Z28s w/350s got the IROC wonder bar(suspension piece,mine did

)
'92 Camaro's 25th Anniversary all got anniversary badges(hood,dash,rear declid)Heritage editions got racing stripes on hood and rear deck lid,on spoiler for Z28s.There were additional colors added polo green and purple haze.
....brief 3rd gen history lesson ended for today
