I am getting ready to buy a set of front and rear sumo springs for my 2018 Siesta which is on a Mercedes Benz chassis. I plan on installing them myself since it appears to be a simple job. Looks like I can get them for under $400.00. Any suggestions or extra tips anyone have regarding them? I am also looking at replacing the entry door key lock with a programable keyless battery operated door lock before our cross country road trip from Calif to Florida and back. Anyone have any suggetions as to which model is best for the door lock?
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