I thought Sig produced the Astro Hog but when I first checked their list I did not see it. This time, however, there it was. Senior moment!! The specs on the Astro Hog are slightly larger than the PT-19 Plans I took off the net. I have never scratch built a plane before and think it would be fun to give it a try. By the time I enlarge the plans, buy the materials, redo the numerous mistakes I will probably make, it is probably much cheeper to modify the Astro Hog kit. Anyway,thanks for all the help.