That's from the website...and it says they just used a phase IV prototype vehicle which would mean they had upgraded fuel pump, injectors, full 3.5" hi output exhaust system, Cold air induction system, DR series intercooler upgrade and ofcourse the unichip engine management system....that whole system including the cooler would come to about $7500 by my estimates...as I've been quoted around $5500 for all of them components minus the cooler....interesting I must say..... I reckon I would go for forged pistons, billet conrods and a 6-speed manual conversion before pumping over 500 fwkw into my engine though...and something would need to be done about the rear end, the diff. just wouldnt feel right at all. Cheers.