In the early 70s Massey lengthened the straw walkers on the 510.  Those might have had more capacity then a 105 but earlier ones did not.  We ran 510s.  They are not capacity monster.   The Gleaner G came out in 1968 so it and the 105 were competitors for about one year.  The G is more of a 70s combine since it was made into 72.