the t5 from the 5.0 litre v8 has a longer input shaft then the 4.0 litre box from the falcons. this is why the i6 box is used in conversions on clevos. ( as i have done on my Fairlane)
easiest way to determine if it will suit your application is to bolt the box to the trans and put a straight edge or flat bar on the mounting face of the bellhousing, if any more than the section of input shaft where the spigot bearing seats is sticking out past the mounting face of the bellhousing then your input shaft is too long.
from memory the input shaft on the 6cyl box is about 165mm long
ZHlane got a reaction from Outback Jack in Input Shaft Length on T-5