yes two adults have been a lot of times,and thay work great.thay are for a 88 dodge truck i think.so i dont think you will break them on a buggy the top eye has a 3/4 bolt.the thang to look for is,on some the bottom of the shock doese not have an eye hole thay have like a bolt to mount it.you want the ones with an eye hole on both ends.
air compressor works fine to air them up,and just play with the psi until it rides how you want it to.thay come with air line and every you need but the bolts.
right now it has the stock steering rack,i cut it shorter but its way to long for how the buggy is built.thats why it has limit straps to keep bump steer to a min.it needs a center mount rack.
http://www.amazon.com/Monroe-MA817-M...ar=1&carId=001