You will problably ditch everything put half of the bump stop. The cap or hat replaces the top mount point for the spring. I don't think a strut boot will fit under the spring so that is out. I had a ton of parts left over after my coilover install. boots, top mount points for springs bottom spring holders for the rears I think. I wouldn't buy anything without talking to the shop that is installing your coilovers.
wes
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