Sell or not? aaargh?

So my 323BG Sedan 1.6 really runs like a sewing machine. Never had any problems etc. The following reperatures would still occur the next time. -New cooler (since many cracks[seat agents also never]) -New gearbox 2 gear goes almost never – heating hose is also defective (uuaahh cold in winter) – exhaust system is pully leaky already more front and in the middle of the car, than in the back. Actually I wanted to do all this again because I was really lucky with this car. he is just standing a beautiful car at our dealer I always wanted. A 91 Toyota Celica Gti with 105 hp. On the one hand I would buy this car immediately and make it up a little bit is also the youngest. And on the other hand I still hang on to my Mazda. Both are not possible. Were you already in such a mess?? mfg