Here's how you should approach your search:
* Check with suspension specialists: Contact companies specializing in classic truck suspension. They may have experience adapting kits or even building custom solutions. Don't just look for "lift kit" but also "suspension lift" or "truck lift" as some may list kits by application rather than year.
* Look at universal kits: Some companies make universal lift kits that may work with modifications. Be prepared for some fabrication and possibly custom parts. This route requires more mechanical skill.
* Check forums and online communities: Join online forums dedicated to classic Ford trucks (like the Ford Truck Enthusiasts forums). Members there often share their experiences and sources for parts, including lift kits. They may know of specific companies or suppliers that cater to this older generation of trucks.
* Consider a body lift: A body lift is simpler than a suspension lift, raising the body relative to the frame. It's a less involved installation but doesn't provide improved ground clearance like a suspension lift.
In short, there's no single, definitive answer to who makes a *direct-fit* kit. Your search will involve more detective work than simply finding a ready-made product.