No photos of mine but I found this on the web. Lower brace is just a piece of 1" square section hollow bar running from one side to the other with a flat piece of 5mm thick iron plate welded on each end with a hole drilled for the bolts. Make up one end and weld it together. Bolt it to the car and make up the other end but bolt it to the car BEFORE you weld the plate to the bar so it's the exact length to suit your car. Make sure the holes you drill for the bolt to go through are just big enough for the bolt to go through. You don't want any side movement in this bar. Also, the hole has to be far enough away from the bar so you can fit a socket on the bolt to tighten it.
Make sure the bolts have a spring washer to hold them in place or Loctite! I once spent 4 hours trying to get one of these bolts back in place after it had worked it's way loose one night going home from work.
Attachment 7991
Upper bar was similar to this but 2 parallel bars across the engine bay with a short piece at each end joining them so it looked like the letter H turned on it's side at each end. I used 1/2 inch square section hollow bar which was real easy to weld. The ends were similar to the picture above.
Attachment 7994
Imagine 2 of these in the picture below going across the engine bay but with only 1 hole at each end.
The lower bar makes a big difference to the handling. The car turns into tight corners much easier. The upper bar makes very little difference but looks good when you show off the car to your mates, especially if painted bright red.