wyldechild

hey guys, just asking for a little info... I did search but nothing quite what i needed popped up. Well... sensor 1 bank 2 of my o2 sensors isn't reading and needs to be replaced. can someone direct me to the cheapest place to purchase as I think $350 for it is outrageous. Also, I got a new engine at around 72k miles and now i'm at almost 73.5K, so after approx. 1k miles I rev it up to at most 6k rpms and plan on after about 1.5k-2k miles on the new engine goin higher but is there any special things I should do to the engine cause it's new? like cleaning out the carbon with some mix or something? thanks a lot guys, really appreciate it.