Just to make sure... Are you aware that you will only be gaining a granny 1st? The SM420 4th gear is 1:1, just like 3rd gear in your truck.


1962 Fleetside 4spd 235 w/O.D. posi 3:90
In the Stovebolt Gallery
1990 Subaru Legacy Wagon AWD 2.2 5sp
2013 Ram Tradesman C/V
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