someone wanted me to post up if i found a part# for the stock style gm vent hose upper fitting . here ya go i happen to stumble on this one and bookmarked it .
https://www.summitracing.com/parts/oer-15771000/overview/year/1987/make/chevrolet/model/r10
https://www.summitracing.com/parts/oer-15771000/overview/year/1987/make/chevrolet/model/r10
