An excellent build and great craftsmanship. The I.A.R. 80,81 have been a favorite for several years and when I discovered the I.A.R. 37,38,39 series, that led me back to the 80,81 but now there is much more info and the kit. I still plan to build a controlline model at 1" to 1' using the plan in the sams pub. Again, a really great job on a seldom seen subject.