How much did it cost you to have your car built by Top Secret? Just curioushipogtr said:DCD's right. I posed this exact question to a whole bunch of Japanese tuners before I bought my GT-R. Same conclusion from all of them. If you're goal is drag racing with 650hp+ as your target (not too difficult to get to as you probably know) then forget the V-Spec. Save your money... you'll be dumping the key parts in the name of performance reliability anyway.