exhaust setup help (Superturbos)
 

I found a pair of superturbos at my local Advance Autoparts. Now the inlet & outlet tubes are both 2 1/2 inches, & I belive that the ones in the SLE are 2 inches intlet 2 1/2 outlet. Is this correct? & if it is... What is the way to install them? I would assume I have to buy or have some one make a new "y pipe", but want to be shure before I buy.
Can some one with experience in this, light my way.