MR2 turbo center drive shaft, gearbox oil seal, center bearing and housing
Markings on bearing are "KOYO 83B231DCS19 JAPAN" (or just"KOYO 83B231 JAPAN"
on the original 1994 bearing) (1s could be Is). Outside Diameter: 72mm,
Inside Diameter: 41.5mm, Width: 23mm. Toyota part number: 90363-41003,
price: 25 pound 29p (July 2005) (replaces 90369-41001 I think).
http://www.mr2turbo.info/