I am interested in planting some confectionary sunflowers this summer, and I was wanting to know how hard they are to harvest. I have a 1975 model 6600 with a 220 batreel header that I use mostly for wheat and oats. Can I use this header to combine sunflowers, and can I use the regular cylinder speed pulleysIJ What cylinder speed is best, and are there any other concerns to be cautious about when trying thisIJ Thanks, Kelly