Sorry just to correct ramrod as the information he's provided is a bit misleading.
If you have a mustang V8 box you change nothing other than getting the box rebuilt probably. If you get a falcon V8 box good luck, but they aren't the same as the mustang box either and rare to get now.
You can get a vn-vs commodore V6 T5 and the shifter is almost right for a 740, but you can get a pre 93 mustang cobra T5 input shaft as they are the straight bearing model
If you get an eb-el falcon box with straight bearings you get the same. Shifter length is better for a 240.
If you have an ef-ba falcon na 6cyl on box, you get the input shaft modified for length by gear repair as the gear cluster is Australia only as best as myself and the transmission guy who does this stuff every day can tell. Au shifter is perfect for a 740. Ba is a bit long.
If you're keen, you can get an xr6t t5 and fit the mustang cobra 93 shaft. You can swap shifter housings over. And also have the box rebuilt as it will be stuffed having come from an xr6t turbo.
