Adding Bronze Bushings to Ductile Iron Rockers

Thanks for all the discussion around this. I've beed out of commission getting a tooth pulled and had not been able to check the thread. The pictures of the bushed and un bushed rockers are gold. That tells me 90% of what I needed to know. My biggest stumbling block now is cost- at $16-18 per rocker for bushings plus the set needs adjusters, I'm looking at well over $1000. At that point, I might bebetter off looking for a new set.
Be careful making your decision on what to buy new. There will be FEW offerings as strong as the stock ductile iron rockers. The Comp rockers come to mind.....but NOBODY's aluminum rocker.