Advice needed on front brake caliper for 89

My front left brake caliper is locking up on me. I just wanted everone's opinion on whether I should rebuild it or just replace it. (And should I rebuild the right side while I'm at it even though it seems to be working fine.)
Back story= I was having a problem with high idle, engine surge and loss of power during acceleration. I cleaned the TB (was pretty dirty), adjusted the idle and TPS. After I did this the high idle issue went away but now sometimes its hard to start and the car still has no power during accleration. I am going to replace the spark plugs and eventually the fuel injectors. I ohmed them and about four of them fell way short of where they needed to be (they are the original Multech injectors). Add me to the list of Jon's customers.
Still working to get that suck me into the seat G-force feeling when I step on the accelerator that I lost not so long ago





