Most likely, Yes
The ’91 had a push rod 5.0 engine, while the ’02 has the 4.6 overhead cam modular engine. The 5.0 did come in the newer rounded body style, so there are factory parts to make it work. Also, the older 5.0 is much narrower then the cammer, so there would be room the spare.
You could make it work if you had a trans to go with it.
You won’t pass emissions, though, and the ":whale": body never came with a 5.0L
no, different car/ different engine