Replacement HVAC plug - Fixes the selector switch - Third Gen (Camaro/Firebird)

A clever work around solution was offered to to fix the hissing and loss of operation of HVAC controls for 3rd generation Camaro/Firebirds (1982-1992).

https://www.youtube.com/watch?v=Mv782CIJDks

Issue: Small tabs break off and GM doesn't sell this replacement part.

Solution: I tried the workaround and had clearance issues in my 1992 Firebird so I decided to make a right sized part that was stronger than the original.