66 Suburban 4X4 How to swap to rubber front shackle bushings
 

How can I get rid of the front bronze/brass bushings on 66 Suburban 4X4? Will shackles from 67 and up bolt on. These are the first year for rubber easy to find bushing right? How many parts will I have to change? Keep my front springs and hangers? Can I de-rivet a 67 and up and bolt on. Same hole pattern?