header sealing issues HELP!!!

[Klown57]

i own a 2001 toyota celica gt, i have installed an after market header but now i have an exhaust leak. the gasket seems to be the main issue, its the gasket at the flange that conects the header to the exhaust pipe. i took the car into the shop and i was told that i need to find this part being that its a custom piece and they dont have it. so any help on where to get it or how to fix it would be great help thanks guys.

[frankie g.]

my friend had the same problem with a different car.... you should try and find an exhaust that better fits the header ... this way you can buy the gasket with the new exhaust.... ask which brand would fit your headers better cause certain brands wont work with certain brands... if not then your going to have to get that custom gasket.

[wilber]

If the gasket is paper and not metal,soak the gasket in water till it swells up apprx. twice its normal size then install,helps seal better,if it's metal try paper.