i was thinkin about getting a t51r or a gt3540.i love that damn whistle of the t51.how in the hell do i get that sound?i was wondering who u all could recommend for good turbo work?i know there is garrett?what about that one guy in az?i forget his company name?i was wanting ball bearing option on my t78 and a lightweight compressor wheel.would ball bearing give me this whistle?what can i do to get this whistle without having to get an all new turbo kit?