sweeeeeeeeeeet, i didn't know they were already on sale!
a cold air intake is always a pretty cheap way to a little more "spiffiness"
antisway bar
suspension? (don't know exactly what it comes with)
(tasteful) wheels
a nice sound system is always a plus too
the door is usually wide open on eclipses to do as much or as little as you want. good luck!
p.s. this thread is useless without pics!