Hang in there
There were times I wanted to throw in the towel too. I've owned mine 11 years now, and the car went through some fits, especially at 5 years through 8 years old, which cost me a lot of $$$ , and my wife and I were really financially strained from it at times. Most every common SC complaint (except headgaskets thank god ) reared it's ugly head for me then. I couldn't even consider mods because I had all I could do just to keep the car going.
Weird thing is, once I got past it, the car became very reliable again, and she's got over 205k on the clock ! In fact, the last 3 years my SC has been like a new Honda, with only maintenance being required. And the previous repairs caused me to go overkill with maintenance, just for peace of mind . Ironically, NOW I can easily afford to fix the car when she breaks, years ago it was tougher . Life is like that though...
I find myself driving it lately and think...13 years old, 200k + miles, and it occurs to me there's no excuse for the car to run this well. It really still impresses me that it starts without a tap or knock, throws no smoke, idles smooth, and accelerates with such alacrity that she can still chirp second gear in 90 degree heat . And I really can't think of any other '89 model that would get me the stares it generates. I get into conversations at gas stations about the car! I still think the styling holds up today, and from what people at the shows I take it to say, many others share that feeling. They sure like it, even if they don't know much about it.
All this to tell you; there are never any guarantees, but sometimes, sticking it out is justice hard won, and sweet. Not everyone can endure the $$$ toll these cars can bring, but , at least for me, I'm sure glad I did.
Good luck no matter what happens.