I'm just now putting my '64 D100 back together and realized that I have the same 1889100 starter (including the same G1889067 head casting) on my slant 6.
Yup, trucks with the 225 engine and the big clutch got this direct-drive starter. Rebuilders used to call this the "Chrysler tin-can starter" back when they had occasion to talk about this starter.
Most 225s had blue or red painted blocks, but mine is one of those with the yellow engine. I've been told that different Mopar plants made the slant 6s and they each had their own color scheme.
