Per the 2009 Viper service Manual CD:
"The transmission is full when the fluid level is even with the bottom of the fill hole." using ATF+4, of course. However, the capacity is not listed. Searched the rest of the CD with no luck. The tranny fluid capacity is NOT listed in the 2008 Owners' Manual either.
NOTE: For the T-6060 trannies, the torque on BOTH the drain AND fill plugs is listed as 20 ft. lbs...27 N-m (as opposed to the two different values published for the T-56 trannies).
Of further NOTE...the 2009 CD lists the oil filter with an INCORRECT part number ( listed on the CD as 05037836AA...which is the Gen I-III filter...and fortunately it WILL NOT FIT on a Gen IV. The CORRECT Gen IV part number is 05038041AA...which DOES FIT).