went to go check out this 92 integra today with b16 and gsr head w/ ls tranny, car seems to run good he say sit has 50k miles on it...but he said the valve cover is leaking oil, he said he's changed it 2 times already but cant figure out the problem...any ideas??? is this a major problem...do you think he could have made the valve cover leak so the leaking oil could cover for a blown head gasket??? besides overheating and smoking what are some other signs for a blown head gasket??? the buy wants 3 grand for this integra...what do you thiNK???