Amadden

Hi, Ive just bought a 1993 WRX Impreza that has just landed from Japan. I want to do some very basic upgrades, but keep it as standard as possible. Mainly upgrade parts that would give trouble or cause problems. There's only 75k Kilometres on the clock. I've attached a picture of an upgrade oil pump, does anyone know if itll fit or how would I find out? Any advice would be appreciated