Your post made me check mine lol. My rears came with the bushing and washers. My fronts didn't come with any. So found out Summit Racing has the washer/bushing kits for around 10-12 bucks.
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Part number for washers/ rubber bushiing kit is BSN-B4KT1Z103A00
If you need new top hats and bushings Advance Auto has those kits for around 40 bucks