new to the forum but been coming on here for a while now, why cause i own a 96 Seville sts and as much as a hate i love it for some weird reason? any ways i have a few problems to figure out but # 1) theirs a spot underneath the throttle body that leaks coolant coolant where the heater line connects to the engine block. i was told its a huge cast peace that's connected to water pump but i haven't found a picture or diagram that shows a gasket there? # 2) is the service emission light on the dash is on and as soon as i get the code i will post it but pretty sure its ether the cat or o2 sensors. also if the catalytic convertor is bad would it hurt just to knock it all out and run it hollow, it has duel flowmaster already?