I have a LOW mileage '94 cobra. Mods so far have been a cold air intake, bassani catted midpipe and borla cat back exhaust. Car breathes better and the sound is awesome! My understanding is the MAF housing and intake opening are 70mm and the TB is 60mm. Would I be able to eek out a little performance gain from adding a 70mm TB also? Or would I just be opening up a can of worms with idle issues and what not. Would value any opinions. Thanks