The hobnail and Lombardy is for 1979 and 1980 only. In 1978, it was just the Lombardy like this set:
And I do have a set of these in stock right now for $499.
The 1978 Y88 Could have come with Deluxe Cloth, Deluxe Vynil, or even Standard Vynil Interiors. Deluxe was not a standard option on the Y88. The only car that came standard with all of the goodies like deluxe interior, power windows, power locks, t-tops, etc. was the 1979 10th Anniversary Trans Ams and the 1980 and 1981 Pace Cars. All other Special Editions could have come plain jane just like any other Trans Am.