Bob you are right with the size of the 5.4l yes I have had to slightly modify the foot box and even the pedal box I have spaced the motor back over to the left hand side as the US push it couple of inches to the right hand side, the steering is not so much of an issue with out the headers fitted but may have to change once i start to fabricate them I have a few pics in my albums and a lot more still on my phone, once I get more time I will upload those mods
Regards Psycho