Mustang
In the .60-.90 size range I don't think you will find anything better than the Brian Taylor design. Not a true kit but Bob Holman has laser cut parts and a fiberglass fuse/accesories. For sheer accuracy the Doss Steed plans are touted to be the best, generated from original North American Micro Fiche engineering drawings. I think his airplane is around 92 inches but the plans could be scaled much more easily than generating new stations from a plastic model. Just my .02 cents.