Strange 03GT Gears?

i got a 2002 and i'm running 120 kph or 74,4 mph at 2000 rpm.
and that is with 3.27.
one thing i know is my fifth gear is 0.62 but if you try all those program it end with 0.68. I ask around but i didn't know how come. For what i know at the beginning gt was 0.68 and mach were 0.62.

to get 2500 rmp at 75 i should have 4.1

and i dont know if there a difference between the us and canada who know's ???

if your still not sure then take some real value in each speed
at a fixed rpm
exemple for me
3- 3500 rpm for 100kph
4- 2680 rpm for 100kph
5- 2000 rpm for 100kph

hi it's still me but i check on the tremec site and it exist a 3650 with a fifth with 0.74 if i put it in my excel software it give me around 78 mph with 3.27
not that far off.

better check with multiple speed. to make sure how off this sofware is off

i tried the software and i end up with 3.08 differential daw!!!