Wow! Nobody mentioned my 9" low base..I'm hurt!
There are already old threads about it.
You can get it here as a complete kit. I make the base plates (low as you can go) and Mickmate is selling the whole kits. Several guys using them.
Not trying to sell you anything. Just thought I would make you aware of another option.
MAXX Air System MAXX Air System [427 289 CSX CCX KMP ACE HT SPF] - $275.00 : Acton Custom Enterprises, Custom Metal for Cobras