Hello—I am a new member. I had a 1970 firebird when I was in high school ( that was a long time ago!) I always wanted another f-body bird since I sold my first one years ago. I started looking for one a couple years ago and just purchased a 1981 formula that I found in Oregon. I live in a small farming town in IL about 40 miles east of St Louis and the cars in my price range suffered from the Midwest weather and rust. The formula is definitely a west coast car in that it is rust free. It also is heavily optioned; 4 speed, T tops, power brakes and steering, power windows, power door locks, A/C , rear window defrost, am/fm cassette with power antenna and an “audio boost” factory amp ( There is actually an “audio boost” switch to the left of the rear defrost switch—I have never seen this in all of the firebirds I have seen!) .....Anyway, my question is; what is the essential and best restoration and repair/ service manuals available and recommended for these classic cars. Thanks in advance for your help.