dmax3500
06-01-2008, 01:03 AM
can i add a 5-6th gear to a 4 spd ally in my 2005 4500 8.1 2wd
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Tanc Crusher 06-01-2008, 10:37 AM What vechicle is this? van, truck, rv Which Allison model is it? Look in glove box at RPO codes. List the M** ones. Brian | ||