You should be able to get all the parts at your local Home Depot, Lowes, OSH or other massive hardware store and the camera mount from can be found at any decent camera store.
3 - ¼ by
2½ inch bolts
the electrical tape and bolt the two pieces of box
3. The next
step is to drill the ¼ inch hole at the end of the longer box aluminum
piece for the camera head mount.
you have finished drilling all the pieces you will need to go back and
clean up all holes and cuts you made, especially the ½ inch holes for
the headrest posts. Make sure there are no sharp areas left on any of
the pieces. I used a dremel tool with a sander disk (it fits the ½ inch
holes perfectly). You can also use a file or just a sheet of plain old
sand paper. After you are finished sanding, cut a piece of the plastic
tubing just wider than the box aluminum.
5. The last
step is to assemble all the pieces and do a test fit on the headrests.
With all the bolts loose you should be able to slide the headrest posts
into the rubber sleeves (it should be a little snug). If you can't, go
back and sand a little off the ½ inch
If you need any more info feel free to email me
I couldnt find the Slik head the original author used, so I used the Bogen/Manfrotto 3009 ball head. It has since been replaced with the Bogen/Manfrotto 482. The official name of the NEW model is 482 Micro Ball Head.
If your camera is on the heavy side you may want to use the 484 Micro Ball Head, its slightly larger and can take a little more weight then the 482.
Link to Bogen website: http://tinyurl.com/dnlz
Links to purchase info at B& H Photo:
482 info: http://tinyurl.com/baup
484 info: http://tinyurl.com/bauf
has a 5.5" distance and E39 is 6" apart for the two holes.
Taken using the mount at Willow Springs Track on
a E46 M3.
layout in .pdf format