74 Duster 360 4spd. production #'s ?

Thanks for the info. Going to check out a #'s matching 74 Duster tomorrow. 360 4spd 321 SG PS,PB Burnished red color with white stripe and black bucket interior. All original paint and int. Very nice body. Can drive home with some small rust holes in lower qtrs front and rear. Opinions on what to offer for it? Like new inside trunk. Missing nothing. Oh, also original Broadcast sheet and window sticker too.