hey guys im bout ready to put on my full exhaust. ima put on pacesetter lt's and the texas speed true duals whooo im ready to rumble the streets. but what else do i need. i know i gotta get the o2 extensions..spark plugs but what kind do you recommend? shes got 173xxx miles on it. and gaskets...jus get new gm gaskets?? and last question.... IS THERE A TEXAS SPEED VENDOR ON HERE?!!!!??? im really tryin to see if i can save some money or get some kind of hook up!!!???