Too late, but here goes.
Usually easy job, like you said 2 bolts.
Just make sure you get a good ground between the starter body, bolts and engine as that is the ground for the starter. So sand the area where the bolt head tightens on the starter and the area between the starter and engine where the bolt goes through. Your just trying to make sure you have a good ground.
Then on the positive side, make sure the cable is clean on the end and in good shape so you get all 12 volts going to your new starter.
Good time to check the ground cable from the battery to the engine as well. If you have a lazy starter, always check for dirty grounds. They are often the problem.
If everything is making good contact your new starter will wind over great.