Here is a kit that is perfect for the home fabricator. If you want a custom wishbone upper link but you have to build it on site, this is the kit.

This kit includes the following:
1 Super Pivot Joint (2-5/8" Wide)
2 Link Ends with Poly Bushings (3" Wide)
2 30" Pieces of 1.5" OD DOM Tube with 3/16" Wall