I wouldn't know to much about it but
Does the car already have the big block in it .
Do you know what the rim and tryes hieght messure at .
What wheels compo do you have already .
What height is the front of your car now measure from the ground to the lip on the wheel arch .
Last thing I should have put this first post in the classic falcons you will see more traffic .
Or try posting here www.fordforums.com.au
most the people that used to be here are now there