I bought my car with BERK HFCs installed and the other day the exhaust got really loud. I checked under the car and it looks like the stud off the exhaust manifold is the only thing holding it on and the other two bolts that should be connecting the HFC and exhaust manifold are missing. So...

1. Are the two holes with the missing bolts thru holes?
2. Are the two holes in the exhaust manifold threaded or thru holes?
3. Are the BERK HFC holes threaded too or thru?
4. What size diameter/thread/length are the bolts if anyone has spare bolts?

Any help is appreciated thanks!

-davabran