Really sorry to do this, but I have to post a very unsatisfactory experience with HP Turbo. Called and ordered parts after seeing their add for their NSX special on this site. Very specifically asked if they could deliver my parts before Thanksgiving, answer was yes. Charged my CC October 9th for nearly $2500. No parts at Thanksgiving. Promised to be on the way and you'll have them by Friday each week since then. Never able to provide a tracking number to prove they even were sent in spite of repeated requests. Finally had enough when the parts didn't show last Friday in spite of promises and called Nathan again and said cancel the order. Still could not provide tracking number to prove shipment and said OK, we'll cancel the order, when the parts get there send them back and we'll issue refund. Parts have still not shown, no tracking number, and this looks like theft to me. What a bunch of BS, putting return of product that has no proof of even being sent as a condition of returning money held without delivery of product for over two months now? Not sure what I'll do next, but be advised that this doesn't speak well at all for Nathan or his company, so be careful if you are thinking of dealing with them.