Holley sniper failure, this time its all bad.

Sure it is. my 186,000 mile SC400 is boring..gas, oil, filters and tires..still has its original O2 sensors! As a parts guy, you see all the bad. But there is a huge percentage out there that never have an issue. Like my biz as a repairman, I see every problem, but I meet people that haven't had a phone man out in 25 years.