Yep. The easiest way to get to EVERYTHING you need is to drop the Y-pipe from the exhaust manifold. Unbolt the Y-pipe from the front and rear manifold, and the catalytic converter. This gives you the best sight lines on the alternator. Also, as mentioned, the passenger's wheel and lower splash guard need to be removed, as this is how it comes out if you have to remove the alt.
It is NOT a fun or easy job. Give yourself plenty of time, and be sure you have about 2 feet of extensions and a universal jouint for your sockets.
If you have a bunch of socket extensions (2.5' worth) and a universal joint for your socket extensions you don't need to mess with the Y pipe. Trust me I had my Alternator in and out about 6 times over the last few weeks.
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