Posted by bucky [162.158.69.62] on Wednesday, November 30, 2016 at 20:55:00 :
In Reply to: Re: Which NP435 are you trying? posted by Dozerman51 [199.27.133.42] on Wednesday, November 30, 2016 at 19:53:52 :
It replaced the NP420 around 1964. I think the 420 was 10 spline as well.