bottlefedpony

Hi everyone I've been hangin around these forums for a lil while now and there is some good info floatind around here...Anyway my question is I just bought A 04 Gt I threw on a Bassani X-pipe w/flow cat back.are the O2's assigned to the bank the came off of and for the o2 extensions does it matter where i put the mils..meaning o2-mil -exten.or o2 exten-mil??And how do you clear the check engin light??Thank you foranybody that can help me....