Dagass makes an excellent point. Save you money for now, buy a Hyper 7 PBS and youll be competitive on any circuit. Spend the extra cash on spare parts, fuel, whatever. It's not the car thats fast, it's the driver. Those pros could kick most of our butts with a radio shack car. Marketing companys make the cars attractive to guys like you and me to spend our hard earned cash for the name or snob appeal.
Buy what matter, PBS, adjustable suspension, good shocks, and race alot. When the car starts holding you back then upgrade, you will know when that point is.

As for the Kanai - if you still must have the latest greatest, check out the Mugen MTX3, Hyper 7 PBS, and the Thundertiger.