Per la tua 86 teste alluminio:
Questi sono corti ,come li vorresti tu,in foto pero' perche' in descrizione poi scrivono full lenght (lunghi),bisogna vedere... senza tubicini air injection
http://www.summitracing.com/parts/HED-66441/?rtype=10
Mantenendo l'air injection (tubicini sui collettori)
http://www.summitracing.com/parts/HED-68441/?rtype=10
Senza air injection Termal coated
http://www.summitracing.com/parts/HED-68448/Application/?query=Year|1986|Mak e|CHEVROLET|Model|CO RVETTE&prefilter=1
Ceramic coated
http://www.summitracing.com/parts/HED-68446/
Distributor stock C4 86
http://www.summitracing.com/parts/DUI-12600BL/
buon shopping...