just bought a 2001 GTP in need of head gaskets i presume, whats the prefered brand that has the best luck,any thing else that should /could be done while were in the motor?........thanks Sorry for not leaving symptoms,[1] on/off skip,[2] sweet smell of antifreeze from exhaust [sometimes] looks like inside glass has that always dirty or film on it even after washing it[windshield],low coolant light on in dash, with a squeezed motor it was just a guess for a head gasket from other i've owned.....any help much appreciated...........thanks