Headers
John Deere headers are pretty good. they had quite a few. the "modern: ones would start with the 00 series: 3300, 4400, 6600, 7700 turbo. then 20 series: 6620, 7720 turbo, 8820 turbo. after that came the titan 1's and 2's, 6620's, 7720's, and 8820's. they then made the 9000 series with the 9400, 9500 and 9600. these were the first with the cab in the center and the engine up the back. in 1998 they upgraded to the 10's, with the 9410, 9510 and 9610. in 2000 they released the 50 series, consisting if a 9450, 9550, 9650 STS, 9650 CWS, and 9750. these were rotary, apart from the conventional 9650 CWS. then came 60 series and then the 70 series, with similar model names to the 50 series. but in 2011, John Deere released the S series. these are new big headers which are the S550 through S690.