1975 Ford Thunderbird Jade Luxury Group Sales Brochure. Introducing the 20th Anniversary Edition 1975 Ford Thunderbird Jade Luxury Group. Jade Luxury Group. New Thunderbird elegance for the discriminating owner. How do you make the 20th Anniversary Thunderbird even more distinctive? you create a new and beautiful Thunderbird Jade Luxury Group option. New tones, textures and fabrics...in threee exterior and two interior decor combinations. More good reason why Thundebird often compels us to ask: Could it be the best luxury car buy in America? Good condition with minor blemishing and wrinkling [see photos].