You may only need two Ever since I got the Electra any kind of rough road or bump would elicit some nasty sounding rattles from the front and a really annoying squeak from somewhere in the rear. Well - after replacing the door striker bolts with new ones from Fusick Automotive ... https://www.fusickautomotiveproducts.com/ ... no more!!! Magic! A previous owner had obviously tried electrical tape as a fix. Bob