found this online, maybe somebody with a v6 can confirm this below.
I just replaced the starter on a 1999 Galant 3.0 V6 (1999-2003): The starter motor is located on the front of the engine behind the exhaust pipe and next to the oil filter.
First disconnect the battery. Next remove the flat, angular heat shield from the starter itself (1x 8mm nut and 2x 8mm bolts). Do NOT try to remove the heat shield from the Exhaust pipe - it can't be removed with the starter in place and it's not necessary anyway. Next remove the oil filter. You'll loose a few ounces of oil so be prepared for that with a drain pan and either cover the removed filter to keep debris out or replace it and remember to check the oil level later. Remove the small signal wire from the solenoid (released by pushing in a tiny lever with a finger tip) and also remove the 12mm nut attaching the positive battery cable to the starter.
The starter is held in place by two 14mm bolts. On the engine (passenger) side, there is a 14x30mm bolt threading into the transaxle from the bottom of the starter. On the transaxle (driver) side, there is a longer 14x50mm bolt threading into the top of the starter.
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