http://en.wikipedia.org/wiki/Toyota_JZ_engine
1JZ-GTE
"The 1JZ-GTE employs twin CT12A turbochargers arranged in parallel and blowing through a side-mount or front mount air-to-air intercooler."
2JZ-GTE
"The export version of the 2JZ-GTE achieved its higher power output with the use of newer stainless steel turbochargers (ceramic for Japanese models), revised camshafts, and larger injectors (550 cc/min for export, 440 cc/min for Japanese). The mechanical similarities between the Japanese-specification CT20 turbine and export-specification CT12B turbine allow interchangeability of the exhaust-side propeller shaft. Additionally, the export-exclusive CT12B turbine received more durable turbine housings and stainless steel turbine and impeller fins. Multiple variants of the Japanese CT20 turbine exist discretely, which identified with the B, R, and A part number suffixes (eg.: CT20A)."
Was wiederrum total interessant ist. Anscheindend gibt so keinen speziellen CT20. CT20 und CT12 sind anscheinend fast identische Turbolader