1. i read on a previous post that i can install the headers with out taking out the block "using the haynes manual" is this true. if not how hard are headers to install?
2. since i already did my whole exhaust all i need for these headers to work to there full potential and to be installed correctly is the install kit, MILs, and actual headers of course?
3. Finally is it a good idea to install these headers when i expect temps to be -40 for the next couple months or should i not even bother with these?
