Hello Ahmed.
How are things?
That stereo door looks repairable, so don't throw it away. Your plastic imitation wood looks to be a lighter shade than most of the earlier cars, so if you buy the whole box off a scrapped car, because your lighter colour is rare, the new door you buy will not match the rest of your imitation wood.
Your picture is out of focus, but from what I can see if you were to purchase a new cage, you can take 4 parts from it that will make your cage good as new.
If you look to the far hinge on your door, you will see a hinge pin that is about as round as a pound coin inside. The axle of this pushes out through the hole and the plastic arm, and it is held on to the arm by a push on washer. You will need one of these hinge pins, and you need a washer for the broken side.
On the broken side you need two more things, you need the spring that pressures the door, plus you need the black plastic piece that screws to the case. This plastic piece guides the door arm into its open position. It is broken on yours and you need to replace it.
Try ringing Twigworth:
http://cgi.ebay.co.uk/SUBARU-SVX-RHF-BRAKE-CALIPER-BREAKING_W0QQitemZ300285629627QQcmdZViewItemQQptZU K_CarsParts_Vehicles_CarParts_SM?hash=item30028562 9627&_trksid=p3911.c0.m14&_trkparms=72%3A1683|66%3 A2|65%3A12|39%3A1|240%3A1318
They are breaking an SVX. If the stereo cage is intact, buy it from them and use the parts from it to repair your own. I bought stuff off them a couple of years ago, the guy I dealt with was called Jaime I think.
Joe
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