Difficulties in parts search?

Parts list

Difficulties in parts search?

	Description	OEM Part #	Price
20152	20152 20152AE00B Frame sub assembly-rear suspension 2003-01-01 ~ 2004-02-01; W +S	20152AE00B	—
20568	20568 20550AA010 SELF LOCK NUT M14 2003-01-01 ~ 2004-02-01; P +W +S	20550AA010	US $5.24
20568	20568 20550PA000 ﾅﾂﾄ,ｾﾙﾌﾛﾂｸ 2003-01-01 ~ 2004-02-01; P +W +S	20550PA000	US $2.83
L33505X	L33505X 900335056 WASHER 2003-01-01 ~ 2004-02-01; P +W +S	900335056	US $0.57
M000177	M000177 901000177 BOLT FLG14X111X25 2003-01-01 ~ 2004-02-01; P +W +S	901000177	US $4.96
W400004	W400004 909400004 PLUG 2003-01-01 ~ 2004-02-01; P +W +S	909400004	from US $0.41

Rear suspension (FRAME; S +W +P; 1999-02-01~) Diagram Subaru LEGACY U.S.A. 1078028-116883