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  1. MKIV (1993-1998)
    Im rebuilding a 1999 2jz, from a gs300 and im in the process of choosing a headgasket. Im planning on boosting the engine and would like to get a thicker headgasket, (to lower compression) but whenever i look at their specs, it always says bore 87mm or 87.5. I didnt bore out my cylinders so...
  2. MKIII (1986.5-1992)
    Hello everyone needing some help/advice. I have been fighting this spec clutch since first install and the list of issues keeps growing. -MK3 Supra -Rebuilt R154 -Spec Twin disk clutch -Willwood master cylinder ( SPEC Super Twin Dual Disc Clutch Kit 1987-1992 Toyota Supra MK3 SS Trim ) Had to...