I don't think that target is as easy to hit as what is being suggested. I could see the smaller engine helping things but I don't think a 3300lb car is a simple task if it is to retain things like an interior, ac, etc. I'm not saying you couldn't do it, I just don't think it is a simple thing.
My car has the bulk of what was on that list and still weighs around 3575 lbs without me or any fuel, right around 3900lbs with me and full tank of fuel. Now I am a full interior car with AC and even an upgraded stereo, so there are some key areas to shed weight however there is still 275lbs you would need to shed to hit the 3300lb target. If your figures include a full tank of fuel you would have another 110lbs to lose on top of the 275.
And since Jason was curious, here are the axle weights for my car for a frame of reference (weights include me and 1/2 tank of fuel ):
Front = 2177 (57%)
Rear = 1675 (43%)
If I add in the missing the fuel the numbers get a hair better at 56/44. Luckily my cross weights are much nicer at 51/49.
Now just for grins, if you pull an extra 200lbs off the rear, which as noted before would be where the potential additional reductions would come from, your new numbers would look something like this:
Front = 2177 (60%)
Rear = 1475 (40%)
I would give serious thought to relocating as much weight off the front to the back as possible.

