[HI Cobra]

The Kirkhams started being equipped with the billet suspension somewhere
in the #170's. After that the original style started costing a lot more for
whatever reasons. Mine has the original style and works fine for me. It came
with it since mine is #142. I haven't driven one with the billet suspension but
have read that it is much better and have no reason to doubt it - new tech vs
old plus the the Kirkham brothers built it - more than good enough for me.

If one were a total purist and wanted the old style suspension for the $16k,
then that is his choice. I am sure I'd be more than happy with the billet and
put the $16k into the engine and other good stuff if I were building mine.
I was lucky enough to have gotten mine from someone who had had his fun
with it and chose to move on with his toy selection. He did an excellent job
with the build which I really appreciate.