i'm pretty sure my manifold gasket is blown, when I get on the throttle u can hear a leak somwhere in the engine compartment, when it warms up, it isnt quite as bad, but once u give it most of the throttle u can hear the pssss.....its really annoying, and embarracing, u drive a nice car, and some1 gets in to ride with u, and they say, what the...is that??? I checked under the hood and and i couldnt feel anything tho.....i was wondering how hard it is to replace these, and if its blown, while it is off, i'm just going to put a pacesetter header on it, does the gasket for that come with it, or will i still have to go buy a gasket?

The pacesetter header comes with a gasket. I used the pacesetter gasket but other people say to just use a factory one or factory replacement.

how much does a replacement cost?

That I don't know, you would have to call a local parts store and ask how much thier header gasket costs.

at the head is 13.95


i usually recomend using the stock 1 also , more so with the new flange design