Car is definately worth the dollars..
and mods will *maybe* void your warranty.. for example dont expect to raise the HP and then have Subaru of America fix your tranny should you grenade it.. most dealers will not do warranty work if you have mods.. the few who do are good about it.. but it doesnt give you an open ticket.. pays to get to know your Subaru Dealer..
if your serious about getting one.. PM me and ill give you the low down on getting a good deal