Well if the 5858 is the small, I guess this is the medium. That is if you consider 750whp a medium. This turbo spools like a GT35R (200lb ft at 4200rpm is typical (faster on strokers)) but makes over 750whp if you have the fuel and guts to support it. The standard configuration uses the awesome DOC Race top mount tubular exhaust manifold. It uses a 3" V band downpipe and a 44mm V-band wastegate.
The larger S series compressor housing (4" inlet 2.5" outlet) is standard.
Built to order, expect 3-6 week build time