Will 03' Lightning truck front coil springs fit on a 03' SuperCrew.

 

4x2 or 4x4 supercrew?

4x4's don't have coils at all.

 

If you have a 4x2, they will drop the front. I'm not sure how much though. They lower the Lightning's 1 inch, but they are a standard cab truck. They should, in theory, lower a Screw slightly more since they are heavier than a standard cab.

 

I had just put a set of lightning springs in my 01 Supercrew and took it to have it aligned. They told me they couldn't bring it completely in to match the alignment specs. It has negative camber that they can't fix. According to the parts guy the only the bottom control arms are different between a lightning and regular F-150. They also say the adjustable caster camber kit won't work. I've been searching the web for two days now looking for an answer. Nothing yet.

Oh, by the way they said the book shows a 14 millimeter difference between the lightning and a regular f-150.

 

I know that I've seen some people at FTW install Lightning springs without any alignment problems on 4x2 F-150's. I'd get a second opinion.
Also, welcome to the site.