Is it best to use a dremal tool for this mod? Also I need to get a flywheel puller. Does the shee take a special one or can I pick one up at an auto parts store? One other question I am at about 150psi compression at sea level running 93 octane, can I advance 2-4 degrees and still use 93. Thanks guys for any answers to my questions.
P.S. any drawbacks to doing this mod?