Do you mean fabrication, or junk yard, or shop to order parts through? I haven't found any awesome shops to have work done. I do know this place on 5th Street in Kansas City called KC Engines and they come highly recommended for engine rebuilds and stuff like that. For parts the Pick N Pulls in KC sometimes have a few Nissan Hardbodies and Nissan Pathys from the 90s, never any Xterras though. But you can pull suspension parts from both of those as well an a few other interchangeable parts
Are you still in Kansas? My in-laws live near Wichita.Well, I got a notification, so I s"semi-active". I bought my wife's X at State Line Nissan, and had it serviced there for years, until we moved out of the area.