LS4 Performance - High Temp Adhesive

i have been looking at trying to find some high temp adhesive to attatch this to my gas tank.

http://www.buyimportperformance.com/ProductDetails.asp?ProductCode=010401

the location of the new cutout i want to get is going to be dumping the exhaust onto the tank and i dont want it to melt. does anyone know of a good adhesive that attatches to plastic and withstands a good amount of heat? thanks.

so i found DEI's stuff finally but i guess now my question is with it only bein 160* resistent will that hold up with the heat from the exhaust?

http://www.race-mart.com/items/products/chemicals-additives-adhesives/adhesives/specialty-repair-adhesive-sealants/DEI-010490-detail.htm

here ya go... up to 300*....

http://www.pegasusautoracing.com/productdetails.asp?recid=6854&iorb=4764

and i thank you very much :)