was looking around and came apon a handy little program i think a few people would like.
it calculates your top speed in all gears
your engine RPM at different speeds in top gear
and how much RPM drops between each gear.
you can also plot the speeds on a grahp to compare different ratios and diffs
it can also be used to compare high range Vs. low range for 4X4 owners
aswell as showing what difference tyre size plays with your speedo

all you do is enter your gear ratios, diff ratio and tyre size




http://www.quaifeamerica.com/ go to downloads

T5 ratios can be found here
http://www.fordmods.com/forums/viewtopi ... t=t5+ratio