They'll fit in there but you may run into a couple MINOR clearance issues around the steering shaft. Nothing a few slight clearances with a hammer can't solve. They don't have the bung for the egr on the passenger side but if you're going carb then you probably don't care. Depending also on manfufacturer will determine whether or not they'll line up directly with your mid pipe. They can be off slightly.
The only benefit I see of a fox set of headers is if you got a killer deal on them