95-96 are the ones I believe you need to swap the firing order. Since the cam sensor is on the other end of the camshaft, it is inverted. Not a big deal, but do a bit of research of a 6 bolt in a 2G. Tons of info out there.
This should get you started at least.
click Don't pay attention to the oil pump/front cover modifications. That isn't required unless you wanted to run a 2G crank sensor, and now as the years have progressed, Kiggly Racing builds a setup for a 1G front case.
here
The Galant engine is (besides a couple small things) identical to a 1G DSM, you will find a lot more info that way. This is a good write up.
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