can i install the 02 sensor be for test pipe?
 

I have a test pipe and the only way i can get it to aline the holes to the other parts of the exhaust is to have the o2 sensor face down. i drove it down the road like this but i lil affriad i might maby rip it off or bottom out on the high way bumps. I was wondering if i can just install the second 02 sensor in the second bung on the header be for the test pipe?

yea and just block that hole off cause it will rip it off when you go over a speed bump