I am trying to replace the alternator in my son's 2001 Sable with the 3.0L Vulcan, but when I try to remove the long alternator mounting bolt, the coolant reservoir is in the way and the bolt won't back out enough to remove it. Do you have to move the coolant reservoir to get the long alternator bolt off? Also, I've tried to remove the coolant reservoir, but the rear bolt of the two that secure the reservoir is rusted and won't budge. Before I drill the thing out, do I absolutely have to move the coolant reservoir to change this alternator? Thanks. Ken