@SteveSunshine Thank you! Appears the T56R is a near identical match to the T10 ratio wise 1-4. A final drive ratio of 4:09 would put it in a good place for street use at ~9:1 Overall. Was worried it ended up with the silly 3:35 T5 first gear.
@SteveSunshine Beautiful Cobra in a great color !! Do you know which 5 speed Tremec was used- what is 1st gear ratio? Same ratio question for the removed (and included) 4 speed. And also, what is the rear gear ratio?