good luck with your project. I have a 6 row 600 series no-till AC that I bought back in 1979 to plant corn and beans with, I cut it down to a 4 row and set rows on 36" rebuilt all the boxes with new knockers, caps, bearings, everything that went into each unit. also got a set of sunflower plates & filler plates from Lincoln ag. for it also. ( I use the john deere adaptor for the plates ) I now use it to plant a couple acres of sweet corn and a big sunflower patch for the doves. you would not believe how much the doves like sunflowers. like to see a picture when you get it done.