"Joseph Eichler is considered by some to be a social visionary and commissioned designs primarily for middle-class Americans. One of his stated aims was to construct inclusive and diverse planned communities, ideally featuring integrated parks and community centers. Eichler established a non-discrimination policy and offered homes for sale to anyone of any religion or race. In 1958, he resigned from the National Association of Home Builders when they refused to support a non-discrimination policy."
Enough with the history lesson,
Eichler homeowners usually want to keep the home as close to original as possible as the homes have some degree of historical significance. Many people see the homes as having a Frank Lloyd wright type of notoriety to a lesser degree.
Eichler used some very unusual parts and replacing them can be a challenge. Pictures would definitely help.
82-303 doesn't look like any Arcadia parts I've seen, but I haven't seen everything.