you might have clearance issues since the fox body engine bay is wider, but try them before you reject them. perhaps with a little BFH work you can get teh needed clearance.
Nope. Won't fit, even with percussive therapy. The DS collector dumps right at the top of the steering box and the 5 and 6 primaries likely will not clear the shock tower (they stick out ~5" and the shock towers are ~4" from the heads). If you can sell them, get shorties designed for the narrow confines of the 65-66 engine bay.