Here's a link to Heidt's site; Mustang II Crossmembers

Not pushing Heidt's per se, but admittedly I tend to their product. One reason is the finish quality of their welds. Another is a small issue from a performance/functionality point of view, but IMO speaks to the overall quality and that's the upper shock mount cup. I like the look of the stamped "cone" rather than a fabbad cup that looks something like a piece of pipe with a plug in the end. Just suits my sense of esthetics better. Lastly, and this could be argued too, I like that Heidt's spindle is steel rather than cast. In most of these apps the cast probably lasts as well and as long as most hot rods require. Again, it's a personal choice thing for the more durable steel, to me.