My father and me have an Airtractor 502 that was a kit from duane habets. we both sratch built hoppers and use baby powder to do actualyy dusting passes. It is my favortie plan to fly and from talking from some cropdusting pilots, it handles just like the full scale aircraft. here is a photo of our airtractors. I never considered selling it but i guess I could for the right price and I would probably buy another. I have had this plan for about 4 years and it is a favorite out at the flying field. My dad is bringing his to the bomber flyin in monaville, tx next month. it has a 92" wingspan and i use a ys 110 for power. My father has a dle 20 in his.