Wondering how much fabrication would it take to swap out the front end of a 97 to a 98 front end? Would to body lines line up with front fenders??

 

You would for sure have to cut out and re-weld in the 1998 Rad support

And yes, you would have to change fenders, 1993-1997 fenders are the same, 1998-2003 are the same
Same years for the hoods
There was another change in 2004 and up