Bushings for 1965 Chevy Truck Wiper Arm Linkage
 

Can anyone tell me where to get the bushings for a 1965 Chevy Truck windshield wiper arm linkage assembly ? They where missing when obtained so do not even have a old one for measurments. The linkage assembly is in excellent condition except missing the bushings. Does anyone know the measurments/size of these bushings ? If we had measurments we could make something. Have seen a number of people selling reproduction set ups with bushings (some of the reproductions I am told have 'over size' bushings) but no one sells just the bushings (prices are $99.95 to $179.99 for complete linkages).