BoneSS

iTrader: (9)

I am honestly stupid about the Macs on my car now. I am running O2 sensors for sure, but when going to LT's, will I need to buy extensions, or do the MACs already have these from the previous install (bought the car w/ them on there). Also, should I buy new exhaust gaskets? Thanks!

99f1

iTrader: (6)

I would definatly get new gaskets(stock ones)...there cheap too.You should gain a little more horse from the long tubes,but you already have descent headers on there.I think you do need extentions as well.for the time and money in replacing the headers...I would put it somwhere else.If money is no issue then do it up.Nothing flows better than LT's ....but mac mids are pretty damn close.If you plan on lowering your car,LT's could be a problem too.