I’ve got a 255 on a 15” wheel on the rear of my 69 but had to get the rim offset increased. Fits nicely inside the wheel well. No trimming and no rubbing.
Rebuilt the firebird and had a bunch of original parts left over. The fenders and convertible top frame are Dynacorn and still in the box. Let me know what you may interested in and I can send pictures. Will sell as lot if there's interest.
I have 68 and 69 4bbl intake manifolds, timing covers, 67 distributor, 69 engine, wiper transmission, 2 upper cowl panels, and many engine parts. Finishing my car and cleaning the shop. Let me know if I can help. Ron. 530-632-4986
Yes, there was an option for gold leather in 1969. (Previous years had a saddle color.)
It is a rare option. There is no known record showing how many 1st gens got the leather. I believe the interior option code is on the trim tag on the firewall. But, if you would like a list of all the options originally, contact https://www.phs-online.com/ and for a charge they give you all the billing information.