The lower ball joints can be had from several sources. First off you don't need to replace the whole arm just the balls $75.00-$125 each depending on the vendor. Tie rod ends about $45.00 each NAPA Auto.Look to
www.3sxperformance.com for ball joints and you will have a good trip.
My old Stealth has 235.000 miles on the engine and just made a trip from Florida to Colorado / New Mexico and all over the place 3000 miles no problems not even with the rebuilt computer which I did myself for $20.00. This car is really high tech but if maintained will run for a very long time its all a learning curve don't trust the garage teach yourself what makes this beast tick they really have no idea at 99% of the garages.
The Jakster