http://store.summitracing.com/partde...5&autoview=sku

What kind of perfomance will I notice if I install this Manifold? Thanks

 

If your installing just that, you really wont notice a seat-of-your-pants difference. It will compliment other mods nicely if you plan on it down the road by just letting the motor breath a but better.

I installed that along with a LT1 cam into my old 91 Bird, so unfortunetly, I can't tell you how much of a ET gain I received from it.

Best performance mod for you to do by looking at your sig, would be full exhaust (headers to tailpipe) and rear gears.