I ran across this fireproof adhesive and sealant that can handle -300F to 2350F. The manufacturer says it bonds to steel, iron, etc etc. Has anyone use it for repairing exhaust manifolds? Or has anyone used it as part of the 2V Conversion (after milling down intake bore), to create a mating surface and sealant for the Vintage Inline 2V adaptor? Reference pdf: http://www.cotronics.com/catalog/38 907gf.pdf