Reverse speeds of a 6/4 transmission?

[Skeezix]

Any clues on the various reverse speeds of a 6/4 manual reversing trans on a Ford 3000, as compared to a typical 8/2? Hoping the extra reverse is slower but not optimistic. Digging around on TractorData I did find speeds for an 8/4 on a bigger tractor, and the extras were all faster.

Wanting a slower reverse than the 1L on the 8/2 so I can push a snowblower a little slower. Any ideas of gears I could swap into a 6/4 to get the lower reverse?

Might just go for a shuttle trans utility instead, but I saw a 6/4 3000 and got curious.

 

[Skeezix]

Bought a Massey 135 with 3f/1r trans x Hi/Lo and MultiPower today, with a Freeman industrial loader with separate front pump. The low reverse seems plenty slow for a 6 ft. blower.