Pro stock wing questions.

I'm about to start the wing on my dart and would like input if anyone has them or made one?

Length, wicker bill height, spill plate size?

On my 71 dart the trunk is not square so I'm figuring 18 inch from the short point of the trunk to the end of the wing?

Wicker bill, 1/2 inch at a 90 degree or 3/4 inch at 45 degrees? Top speed should be around 180 MPH. ???

The bill will be removable so it's not the end of the world if it's not tuned just right.

spill plates, I see a lot of them canted in at the bottom. I'm thinking just make mine fit the side of the car. Should they roll in at the bottem?

As the dart has a long flat trunk do I need to or should I make the spill plates come forward of the wing a few inches? Is there a gain or a loss with bringing the spill plates forward of the wing? In my mind it should help gather some air and force it over the wing?

Where do you buy your turn buckles and pins?

Any thing else I should be thinking about?
Wait a minute? Has this been down to the track yet? Or we already planned on catching air?