Any Mechanic or anyone advise on my Olds Cutl Sup car frame?

I bought a 86 Olds Cutl supreme last month. It'a a clean ride n engine is in good condition. It has 117,000 miles on it n drives smooth. I notice that the car leans low on the driver rear side. I notice the inside of my truck is wet. Thougth I would need suspension. So I got the work done n put shocks in. The tech told me that my frame is busted on that side. The car does not lean as much. It looks even but still about a 1inch lower then the other side (than before being 2 1/2 inches lower). It drives smooth until I get to 65 mph n it vibrates a little. I was told that it cost money to get a fram for my type of car. My question is can I keep driving my car around? How long will my new shocks hold up? Will my frame break lose all together later on?