Hi guys I bought a reborn 2010 6 months ago and its been plagued with one problem after another. This is my first car ever and I've been into cars but I've always wanted a civic so i got it. After getting the suspension fixed for around 20k and new tyres which cost 27k, my engine has started vibrating a bit and even though it always had a whistling sound earlier the sound has increased. My mechanic who i think is quite honest, says the catalytic converter is missing. He also just tuned the car and found out the radiator is choked which he serviced and ****. The problem i dont know anything about cars and I dont want to be mislead by my mechanic. Can someone please help me fix the car without having to spend too much?