the trailing arms will use a stock bug bushing. that should be available most places.
CIP1 has some (go under suspension-rear/bug - IRS/Urethane Bushings. free shipping most of the time too if you get over $50.
i assume the sway bar is 944. best guess on places for that would be PelicanParts.com, 944online.com, Automobile Atlanta, Vertex Auto.