Most Jeep XJ or TJ or ZJ long arms are typically a radius arm type set up. The upper arm is attached to the lower arm making it a radius arm setup. Thats the reason I don't use long arms on my Jeeps! Because as the suspension drops the knuckles do not retain their caster and when the tire turns it puts unusual force on the ball joints and tie rod ends! Hence people blame axle strength when the actual problem is they have no idea about suspension and steering geometry! If you are using a 4 or 5 link long arm then go for it! You will still need to make some custom brackets for the frame! Keep in mind that every suspension kit is developed for each individual vehicle, in other words, wheel base, track width and center of gravity! You will need to calculate these before you start, otherwise you might have some very bad on road experiences, such as severe brake dive bump steer and major roll on acceleration! If you need help PM me, I can help you wit the link set up! To help you look at a couple of link programs! I use a program called link-calc don't know if it's still around though. Good luck!