VN-VS airbox isn't really ideal, I tried using one as a base and it just doesn't fit well, especially in a JDM car with the radiator overflow where it is. i did make a very crude fibreglass bottom mould of the wheel arch but rushed it and it didn't turn out that well.

It's funny you started this thread Seamus as I've been thinking over the whole air box thing since the motor has been out. What I've come up with so far is making another fibreglass bottom for the wheel arch, use the cut bottom half of a VN-VS airbox, mount it upside down on a slight angle so that the filter is facing the hole behind the headlight. I've already got some ducting from the bottom of the bumper up behind the headlight to help with air flow.