Back in the mid to late '70s I called up Chrysler (Direct Connection) in Michigan and inquired about race 4spds. The tech person asked some questions about my application and made a recommendation of either a White or Red stripe slick shifted trans ( I can't remember which I bought first). I bought what they recommended, ran it for some time and then bought another or two, ending up with some Red and White stripes. I really don't remember if the trans actually had painted stripes on the counter-gear or not, but I know the color references related to the gear teeth variations. These cost $850 to $1200 as I remember.
I'm a general machinist (was) and after having the race trans for some time and tearing them down I copied the slick shift features and started machining my own hubs and sliders from 18 spline street trans like the factory: boy those were hard and took expensive carbide end mills to machine. Some time later (early 80s) when I inquired at Chrysler again, they said they were out and referred me to Joe Liberty.
Liberty had a stock of parts, but more importantly he machined the hubs and welded on high nickel drives. After I bought the first set of Liberty modified gears I never bothered with the stock stuff.
In conclusion I would consider the "stripe" colors as factory id of the race transmissions. My Coronet in the the little pic is what had them and still does, though I haven't run it since 1990. Be kind, I wrote this after the cocktail hour.
